--励輝士 ヴェルズビュート
--Evilswarm Exciton Knight
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon procedure: 2 Level 4 monsters
	Xyz.AddProcedure(c,nil,4,2)
	--Destroy all other cards on the field
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetRange(LOCATION_MZONE)
	e1:SetHintTiming(TIMING_SPSUMMON,TIMING_BATTLE_START|TIMING_BATTLE_END)
	e1:SetCountLimit(1,0,EFFECT_COUNT_CODE_CHAIN)
	e1:SetCondition(s.descon)
	e1:SetCost(Cost.DetachFromSelf(1))
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	if not ((Duel.IsTurnPlayer(tp) and Duel.IsMainPhase()) or (Duel.IsTurnPlayer(1-tp) and Duel.IsBattlePhase())) then return false end
	return Duel.GetFieldGroupCount(tp,0,LOCATION_HAND|LOCATION_ONFIELD)>Duel.GetFieldGroupCount(tp,LOCATION_HAND|LOCATION_ONFIELD,0)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=Duel.GetMatchingGroup(nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,e:GetHandler())
	if chk==0 then return #g>0 end
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,tp,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local exc=c:IsRelateToEffect(e) and c or nil
	local g=Duel.GetMatchingGroup(nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,exc)
	if #g>0 then
		Duel.Destroy(g,REASON_EFFECT)
	end
	--Your opponent takes no damage for the rest of this turn
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,1))
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e1:SetCode(EFFECT_CHANGE_DAMAGE)
	e1:SetTargetRange(0,1)
	e1:SetValue(0)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_NO_EFFECT_DAMAGE)
	Duel.RegisterEffect(e2,tp)
end
