Update c6417578.lua

Added timing for opponents end phase for better quality of life for players.

script/c6417578.lua

@@ -5,6 +5,7 @@ function c6417578.initial_effect(c)
 	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
 	e1:SetType(EFFECT_TYPE_ACTIVATE)
 	e1:SetCode(EVENT_FREE_CHAIN)
+	e1:SetHintTiming(0,TIMING_END_PHASE)
 	e1:SetCountLimit(1,6417578+EFFECT_COUNT_CODE_OATH)
 	e1:SetTarget(c6417578.target)
 	e1:SetOperation(c6417578.activate)