[問題]關於付x的反擊咒語

[jojo the destroyer]

Broken Ambitions Instant, XU
Counter target spell unless its controller pays {X}. Clash with an opponent. If you win, that spell's controller puts the top four cards of his or her library into his or her graveyard.

或是
Cephalid Shrine Enchantment, 1UU
Whenever a player plays a spell, counter that spell unless that player pays {X}, where X is the number of cards in all graveyards with the same name as the spell.

當x=0時(Cephalid Shrine就是墳場沒同名牌時),
該使用咒語的玩家可以選擇不支付0讓咒語被反擊嗎??
我想應該是可以吧...
但怕有更細的規則細節不知道的,
上來問問看確定一下,
thanks~~

[衰神]

當然可以阿，為什麼不行？

[jojo the destroyer]

謝謝~~