diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/give/1.trigger.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/give/1.trigger.mcfunction
new file mode 100644
index 0000000000..e2757f96c0
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/give/1.trigger.mcfunction
@@ -0,0 +1,7 @@
+#> asset:artifact/1638.tome_of_median/give/1.trigger
+#
+# 神器の取得処理の呼び出し時に実行されるfunction
+#
+# @within tag/function asset:artifact/give
+
+execute if data storage asset:context {id:1638} run function asset:artifact/1638.tome_of_median/give/2.give
\ No newline at end of file
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/give/2.give.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/give/2.give.mcfunction
new file mode 100644
index 0000000000..53c77796f0
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/give/2.give.mcfunction
@@ -0,0 +1,68 @@
+#> asset:artifact/1638.tome_of_median/give/2.give
+#
+# 神器の作成部 ここでID等を定義する
+#
+# @user
+# @within function asset:artifact/1638.tome_of_median/give/1.trigger
+
+# 神器の説明や消費MPなどをここで設定する。
+# 最後にasset:artifact/common/giveを実行することで入手可能。
+
+# 神器のID (int) スプレッドシートの値を入れる
+    data modify storage asset:artifact ID set value 1638
+# 神器のベースアイテム
+    data modify storage asset:artifact Item set value "minecraft:carrot_on_a_stick"
+# 神器の名前 (TextComponentString)
+    data modify storage asset:artifact Name set value '{"text": "メディアントーム", "color": "#3dcd58"}'
+# 神器の説明文 (TextComponentString[])
+    data modify storage asset:artifact Lore set value ['{"text": "前方の敵一体を攻撃する。"}', '{"text": "使用時のMP割合が50%に近いほど、"}', '{"text": "与えるダメージが増加する(最大500)。"}']
+# 消費アイテム ({Item: TextComponent, Count: int, Extra?: TextComponent}) (オプション)
+    # data modify storage asset:artifact ConsumeItem.Item set value '{"translate":"item.minecraft.stick"}'
+    # data modify storage asset:artifact ConsumeItem.Count set value 1
+    # data modify storage asset:artifact ConsumeItem.Extra set value
+# 使用回数 (int) (オプション)
+    # data modify storage asset:artifact RemainingCount set value
+# 神器を発動できるスロット (string) Wikiを参照
+    data modify storage asset:artifact Slot set value "mainhand"
+# 神器のトリガー (string) Wikiを参照
+    data modify storage asset:artifact Trigger set value "onClick"
+# 神器の発動条件 (TextComponentString) (オプション)
+    # data modify storage asset:artifact Condition set value
+# 攻撃に関する情報 -Damage量 (literal[]/literal) Wikiを参照 (オプション)
+    data modify storage asset:artifact AttackInfo.Damage set value [31]
+# 攻撃に関する情報 -攻撃タイプ (string[]) Wikiを参照 (オプション)
+    data modify storage asset:artifact AttackInfo.AttackType set value [Magic]
+# 攻撃に関する情報 -攻撃属性 (string[]) Wikiを参照 (オプション)
+    data modify storage asset:artifact AttackInfo.ElementType set value [None]
+# 攻撃に関する情報 -防御無視 (boolean) Wikiを参照 (オプション)
+    # data modify storage asset:artifact AttackInfo.BypassResist set value
+# 攻撃に関する情報 -範囲攻撃 (string) Wikiを参照 (オプション)
+    data modify storage asset:artifact AttackInfo.IsRangeAttack set value "never"
+# 攻撃に関する情報 -攻撃範囲 (literal) Wikiを参照 (オプション)
+    data modify storage asset:artifact AttackInfo.AttackRange set value 6
+# MP消費量 (int)
+    data modify storage asset:artifact MPCost set value 25
+# MP必要量 (int) (オプション)
+    # data modify storage asset:artifact MPRequire set value
+# MP回復量 (int)
+    # data modify storage asset:artifact MPHealWhenHit set value
+# 神器のクールダウン (int) (オプション)
+    data modify storage asset:artifact LocalCooldown set value 40
+# 種別クールダウン ({Type: string, Duration: int}) (オプション)
+    data modify storage asset:artifact TypeCooldown.Type set value "shortRange"
+    data modify storage asset:artifact TypeCooldown.Duration set value 30
+# グローバルクールダウン (int) (オプション)
+    # data modify storage asset:artifact SpecialCooldown set value
+# クールダウンによる使用不可のメッセージを非表示にするか否か (boolean) (オプション)
+    # data modify storage asset:artifact DisableCooldownMessage set value
+# MP不足による使用不可のメッセージを非表示にするか否か (boolean) (オプション)
+    # data modify storage asset:artifact DisableMPMessage set value
+# 破壊時の音を鳴らさないかどうか (boolean) (オプション)
+    # data modify storage asset:artifact DisableBreakSound set value
+# 扱える神 (string[]) Wikiを参照
+    data modify storage asset:artifact CanUsedGod set value ["Flora", "Wi-ki"]
+# カスタムNBT (NBTCompound) 追加で指定したいNBT (オプション)
+    # data modify storage asset:artifact CustomNBT set value {}
+
+# 神器の入手用function
+    function asset:artifact/common/give
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/register.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/register.mcfunction
new file mode 100644
index 0000000000..896ff8101a
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/register.mcfunction
@@ -0,0 +1,8 @@
+#> asset:artifact/1638.tome_of_median/register
+#
+# 神器プールへの登録処理
+#
+# @within tag/function asset:artifact/register
+
+data modify storage asset:artifact RarityRegistry[2] append value [1638]
+data modify storage asset:artifact RarityRegistryWithColor.Red[2] append value [1638]
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/1.trigger.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/1.trigger.mcfunction
new file mode 100644
index 0000000000..ec47876bb5
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/1.trigger.mcfunction
@@ -0,0 +1,8 @@
+#> asset:artifact/1638.tome_of_median/trigger/1.trigger
+#
+# 指定したイベントタイミングで実行されるfunction
+#
+# @within tag/function asset:artifact/**
+
+# storage asset:idのmainhandに装備している神器のIDが入っているので比較し、~/2.check_condition.mcfunctionを実行する
+    execute if data storage asset:context id{mainhand:1638} run function asset:artifact/1638.tome_of_median/trigger/2.check_condition
\ No newline at end of file
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/2.check_condition.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/2.check_condition.mcfunction
new file mode 100644
index 0000000000..b4cf17b7ae
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/2.check_condition.mcfunction
@@ -0,0 +1,12 @@
+#> asset:artifact/1638.tome_of_median/trigger/2.check_condition
+#
+# 神器の発動条件をチェックします
+#
+# @within function asset:artifact/1638.tome_of_median/trigger/1.trigger
+
+# 神器の基本的な条件の確認を行うfunction、成功している場合CanUsedタグが付く
+    function asset:artifact/common/check_condition/mainhand
+# 他にアイテム等確認する場合はここに書く
+    
+# CanUsedタグをチェックして3.main.mcfunctionを実行する
+    execute if entity @s[tag=CanUsed] run function asset:artifact/1638.tome_of_median/trigger/3.main
\ No newline at end of file
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/3.main.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/3.main.mcfunction
new file mode 100644
index 0000000000..5909e1e71a
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/3.main.mcfunction
@@ -0,0 +1,33 @@
+#> asset:artifact/1638.tome_of_median/trigger/3.main
+#
+# 神器のメイン処理部
+#
+# @within function asset:artifact/1638.tome_of_median/trigger/2.check_condition
+
+# ダメージを消費前の時点で計算しておく
+## 500 / (abs(50 - MPRatio) / 3)
+    #500
+    scoreboard players set $A1638.Damage Temporary 500
+
+    #MPRatio
+    function api:entity/player/get_mp_per
+    execute store result score $A1638.MPRatio Temporary run data get storage api: Return.MPPer 100
+
+    #MPRatioがちょうど50±2%でないならabs(50 - MPRatio) / 3を計算して500を除算
+    execute unless score $A1638.MPRatio Temporary matches 48..52 run function asset:artifact/1638.tome_of_median/trigger/calc
+
+# 基本的な使用時の処理(MP消費や使用回数の処理など)を行う
+    function asset:artifact/common/use/mainhand
+
+# ここから先は神器側の効果の処理を書く
+    #前方のEnemyを候補に
+    execute positioned ^ ^ ^3 run tag @e[type=#lib:living_without_player,tag=Enemy,tag=!Uninterferable,distance=..3] add A1638.Candidate
+    #Enemyがいなかったら演出のみ
+    execute positioned ^ ^ ^3 unless entity @e[type=#lib:living_without_player,tag=Enemy,tag=!Uninterferable,distance=..3] positioned ~ ~1.5 ~ run function asset:artifact/1638.tome_of_median/trigger/fx
+    #Enemyがいたら視点と距離でターゲットを決める
+    execute positioned ^ ^ ^1.5 as @e[type=#lib:living_without_player,tag=Enemy,tag=A1638.Candidate,tag=!Uninterferable,distance=..10,sort=nearest,limit=1] at @s run function asset:artifact/1638.tome_of_median/trigger/damage
+
+# リセット
+    tag @e[type=#lib:living_without_player,tag=A1638.Candidate,distance=..10] remove A1638.Candidate
+    scoreboard players reset $A1638.Damage
+    scoreboard players reset $A1638.MPRatio
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/_index.d.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/_index.d.mcfunction
new file mode 100644
index 0000000000..9c269be61d
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/_index.d.mcfunction
@@ -0,0 +1,8 @@
+#> asset:artifact/1638.tome_of_median/trigger/_index.d
+# @private
+
+#> Private
+# @within function asset:artifact/1638.tome_of_median/trigger/**
+    #declare score_holder $A1638.Damage
+    #declare score_holder $A1638.MPRatio
+    #declare tag A1638.Candidate
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/calc.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/calc.mcfunction
new file mode 100644
index 0000000000..f3666604f8
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/calc.mcfunction
@@ -0,0 +1,28 @@
+#> asset:artifact/1638.tome_of_median/trigger/calc
+#
+#
+#
+# @within function asset:artifact/1638.tome_of_median/trigger/3.main
+
+#> Private
+# @private
+    #declare score_holder $A1638.50
+    #declare score_holder $3
+    #declare score_holder $-3
+    #declare score_holder $A1638.500
+
+# 50 - MPRatio
+    scoreboard players set $A1638.50 Temporary 50
+    scoreboard players operation $A1638.50 Temporary -= $A1638.MPRatio Temporary
+
+# abs(50 - MPRatio) / 3
+    execute if score $A1638.50 Temporary matches 1.. run scoreboard players operation $A1638.50 Temporary /= $3 Const
+    execute if score $A1638.50 Temporary matches ..-1 run scoreboard players operation $A1638.50 Temporary /= $-3 Const
+
+# 500を割る
+    scoreboard players set $A1638.500 Temporary 500
+    execute store result score $A1638.Damage Temporary run scoreboard players operation $A1638.500 Temporary /= $A1638.50 Temporary
+
+# リセット
+    scoreboard players reset $A1638.50
+    scoreboard players reset $A1638.500
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/damage.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/damage.mcfunction
new file mode 100644
index 0000000000..f6558122dc
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/damage.mcfunction
@@ -0,0 +1,16 @@
+#> asset:artifact/1638.tome_of_median/trigger/damage
+#
+#
+#
+# @within function asset:artifact/1638.tome_of_median/trigger/3.main
+
+# 攻撃
+    execute store result storage api: Argument.Damage double 1.0 run scoreboard players get $A1638.Damage Temporary
+    data modify storage api: Argument.AttackType set value "Magic"
+    data modify storage api: Argument.ElementType set value "None"
+    execute as @p[tag=this] run function api:damage/modifier
+    function api:damage/
+    function api:damage/reset
+
+# 演出
+    execute positioned ~ ~1.5 ~ run function asset:artifact/1638.tome_of_median/trigger/fx
diff --git a/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/fx.mcfunction b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/fx.mcfunction
new file mode 100644
index 0000000000..db452f81c8
--- /dev/null
+++ b/Asset/data/asset/functions/artifact/1638.tome_of_median/trigger/fx.mcfunction
@@ -0,0 +1,12 @@
+#> asset:artifact/1638.tome_of_median/trigger/fx
+#
+#
+#
+# @within function asset:artifact/1638.tome_of_median/trigger/**
+
+# vfx
+    particle dust 0.1 0.8 0.5 0.75 ~ ~ ~ 0.0 0.75 0.0 0 45
+    particle end_rod ~ ~ ~ 0.1 0.1 0.1 0.05 15
+
+# sfx
+    playsound block.enchantment_table.use player @a ~ ~ ~ 1.0 1.0
diff --git a/Asset/data/asset/tags/functions/artifact/click.carrot_on_a_stick.json b/Asset/data/asset/tags/functions/artifact/click.carrot_on_a_stick.json
index b52518691d..05bbe1d233 100644
--- a/Asset/data/asset/tags/functions/artifact/click.carrot_on_a_stick.json
+++ b/Asset/data/asset/tags/functions/artifact/click.carrot_on_a_stick.json
@@ -1,5 +1,6 @@
 {
     "values": [
+        "asset:artifact/1638.tome_of_median/trigger/1.trigger",
         "asset:artifact/1661.starlight_circle/trigger/1.trigger",
         "asset:artifact/1662.salmon_canon/trigger/1.trigger",
         "asset:artifact/1632.photon_burst/trigger/1.trigger",
@@ -181,4 +182,4 @@
         "asset:artifact/2001.staff_of_the_willless/trigger/1.trigger",
         "asset:artifact/0019.scripture/trigger/1.trigger"
     ]
-}
+}
\ No newline at end of file
diff --git a/Asset/data/asset/tags/functions/artifact/give.json b/Asset/data/asset/tags/functions/artifact/give.json
index 4d1d5891d9..1a750d6386 100644
--- a/Asset/data/asset/tags/functions/artifact/give.json
+++ b/Asset/data/asset/tags/functions/artifact/give.json
@@ -1,5 +1,6 @@
 {
     "values": [
+        "asset:artifact/1638.tome_of_median/give/1.trigger",
         "asset:artifact/1360.vintage_wine/give/1.trigger",
         "asset:artifact/1661.starlight_circle/give/1.trigger",
         "asset:artifact/1390.red_refraction_prism/give/1.trigger",
@@ -569,4 +570,4 @@
         "asset:artifact/0735.collision_plate/give/1.trigger",
         "asset:artifact/0745.blade_of_whirlwind/give/1.trigger"
     ]
-}
+}
\ No newline at end of file
diff --git a/Asset/data/asset/tags/functions/artifact/register.json b/Asset/data/asset/tags/functions/artifact/register.json
index 7c7788a92e..3fdb46bd3b 100644
--- a/Asset/data/asset/tags/functions/artifact/register.json
+++ b/Asset/data/asset/tags/functions/artifact/register.json
@@ -1,5 +1,6 @@
 {
     "values": [
+        "asset:artifact/1638.tome_of_median/register",
         "asset:artifact/1360.vintage_wine/register",
         "asset:artifact/1661.starlight_circle/register",
         "asset:artifact/1662.salmon_canon/register",
@@ -338,4 +339,4 @@
         "asset:artifact/1027.fire_of_rebirth/register",
         "asset:artifact/1111.rod_o_redeem/register"
     ]
-}
+}
\ No newline at end of file