diff --git a/scripts/domain/player_manager.gd b/scripts/domain/player_manager.gd
index 4731359..b8b2339 100644
--- a/scripts/domain/player_manager.gd
+++ b/scripts/domain/player_manager.gd
@@ -29,6 +29,7 @@ func _ready() -> void:
 
 func _physics_process(delta: float) -> void:
 	PlayerStats.regen_mana(delta)
+	PlayerStats.mana_heat = maxf(0.0, PlayerStats.mana_heat - SettingsManager.mana_heat_decay() * delta)
 	_handle_movement(delta)
 	_handle_charge_state(delta)
 	_handle_auto_cast(delta)
@@ -90,6 +91,7 @@ func equip_wand(core: CoreDefinition, compiled: CompiledDeck) -> void:
 		PlayerStats.set_mana_pool(core.base_mana_max, core.base_mana_regen)
 	else:
 		PlayerStats.set_mana_pool(100.0, 5.0)
+	PlayerStats.mana_heat = 0.0
 
 func get_position() -> Vector2:
 	return _position