update Creature Swap (#906)

c31036355.lua

@@ -9,21 +9,24 @@ function c31036355.initial_effect(c)
 	e1:SetOperation(c31036355.activate)
 	c:RegisterEffect(e1)
 end
+function c31036355.filter(c)
+	return c:IsAbleToChangeControler() and (c:GetSequence()<5 or Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0)
+end
 function c31036355.target(e,tp,eg,ep,ev,re,r,rp,chk)
-	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsAbleToChangeControler,tp,LOCATION_MZONE,0,1,nil)
-		and Duel.IsExistingMatchingCard(Card.IsAbleToChangeControler,tp,0,LOCATION_MZONE,1,nil) end
+	if chk==0 then return Duel.IsExistingMatchingCard(c31036355.filter,tp,LOCATION_MZONE,0,1,nil)
+		and Duel.IsExistingMatchingCard(c31036355.filter,tp,0,LOCATION_MZONE,1,nil) end
 	Duel.SetOperationInfo(0,CATEGORY_CONTROL,nil,0,0,0)
 end
 function c31036355.activate(e,tp,eg,ep,ev,re,r,rp)
 	local c=e:GetHandler()
-	if not Duel.IsExistingMatchingCard(Card.IsAbleToChangeControler,tp,LOCATION_MZONE,0,1,nil)
-		or not Duel.IsExistingMatchingCard(Card.IsAbleToChangeControler,tp,0,LOCATION_MZONE,1,nil)
+	if not Duel.IsExistingMatchingCard(c31036355.filter,tp,LOCATION_MZONE,0,1,nil)
+		or not Duel.IsExistingMatchingCard(c31036355.filter,tp,0,LOCATION_MZONE,1,nil)
 	then return end
 	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONTROL)
-	local g1=Duel.SelectMatchingCard(tp,Card.IsAbleToChangeControler,tp,LOCATION_MZONE,0,1,1,nil)
+	local g1=Duel.SelectMatchingCard(tp,c31036355.filter,tp,LOCATION_MZONE,0,1,1,nil)
 	Duel.HintSelection(g1)
 	Duel.Hint(HINT_SELECTMSG,1-tp,HINTMSG_CONTROL)
-	local g2=Duel.SelectMatchingCard(1-tp,Card.IsAbleToChangeControler,1-tp,LOCATION_MZONE,0,1,1,nil)
+	local g2=Duel.SelectMatchingCard(1-tp,c31036355.filter,1-tp,LOCATION_MZONE,0,1,1,nil)
 	Duel.HintSelection(g2)
 	local c1=g1:GetFirst()
 	local c2=g2:GetFirst()