Whenever an opponent casts a spell from their hand, you may reveal the top card of your library. If it shares a card type with that spell, counter that spell and that opponent may cast the revealed card without paying its mana cost.
Mana cost
2
U
Mana value
3
Printings
From
$0.18
EDHREC rank
#23119
Buy
Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
29 Apr 2022
You don't get to look at the top card of your library before choosing whether to reveal it.