Counterbalance
The List
#CSP-31
Enchantment
Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.
Illustrated by John Zeleznik
Not legal
Standard
Legal
Modern
Not legal
Pioneer
Legal
Legacy
Legal
Vintage
Not legal
Pauper
Legal
Commander
Not legal
Brawl
Not legal
Historic
Not legal
Penny