less clone

procedure.lua

@@ -3646,6 +3646,7 @@ function Fusion.StrictGroup(e,leftovers,mg_base,grp,tc,fgoalcheck,chkf)
 	return Fusion.FinalCheck(e,mg,tc,fgoalcheck,chkf)
 end
 
+--- @param mg_base Group
 -- Search mode: find *some* subset of size [grp.min…grp.max] that passes
 function Fusion.SearchGroup(e,leftovers,mg_base,grp,tc,fgoalcheck,chkf)
     -- pre‐filter by grp.filter
@@ -3673,9 +3674,9 @@ function Fusion.SearchGroup(e,leftovers,mg_base,grp,tc,fgoalcheck,chkf)
 	local fcheck_ok={}
 	if hasFCheck then
 		for i,c in ipairs(matched) do
-			local tmp=mg_base:Clone()
-			tmp:Merge(Group.FromCards(c))
-			fcheck_ok[i]=aux.FCheckAdditional(tc:GetOwner(),tmp,tc)
+			mg_base:AddCard(c)
+			fcheck_ok[i]=aux.FCheckAdditional(tc:GetOwner(),mg_base,tc)
+			mg_base:RemoveCard(c)
 		end
 	else
 		for i=1,#matched do