Puresight Merrow
Creature — Merfolk Wizard
, 
: Look at the top card of your library. You may exile that card. ( is the untap symbol.)
Stripped of his sight, he was free to see only the ideal.
2/2
イラスト：
Shadowmoor#146アンコモン英語適正
裁定
2008年5月1日
If the permanent is already untapped, you can’t activate its ability. That’s because you can’t pay the “Untap this permanent” cost.
2008年5月1日
If a creature with an ability hasn’t been under your control since your most recent turn began, you can’t activate that ability, unless the creature has haste.
2008年5月1日
When you activate an ability, you untap the creature with that ability as a cost. The untap can’t be responded to. (The actual ability can be responded to, of course.)