Chancellor of the Annex {4}{W}{W}{W}
Creature — Phyrexian Angel
You may reveal this card from your opening hand. If you do, when each opponent casts their first spell of the game, counter that spell unless that player pays {1}.
Flying
Whenever an opponent casts a spell, counter it unless that player pays {1}.
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Chancellor of the Spires 88%
$0.40#13685
"You may reveal this card from your opening hand. If you do, at the beginning of the first upkeep, each opponent mills seven cards."
Chancellor of the Forge 88%
$0.92#12647
"You may reveal this card from your opening hand. If you do, at the beginning of the first upkeep, create a 1/1 red Phyrexian Goblin creature token with haste."
Devourer of Destiny 87%
$0.88#8101
"You may reveal this card from your opening hand. If you do, at the beginning of your first upkeep, look at the top four cards of your library. You may put one of those cards back on top of your library. Exile the rest."
Sphinx of Foresight 86%
$0.37#11078
"You may reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep."
Lavinia, Azorius Renegade 85%
$0.51#3154
"Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell."
Boromir, Warden of the Tower 85%
$5.62#837
"Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell."
In the Eye of Chaos 84%
#21143
"Whenever a player casts an instant spell, counter it unless that player pays {X}, where X is its mana value."
Cephalid Shrine 82%
$0.29#29975
"Whenever a player casts 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."
Infernal Tutor 81%
$0.50#16380
"Reveal a card from your hand. Search your library for a card with the same name as that card, reveal it, put it into your hand, then shuffle."
Ice Cave 80%
$0.80#20895
"Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell."