Counterspell (Japanese Foil Etched) [Strixhaven Mystical Archive] Cockatrice you may sacrifice Sanctum of

you may sacrifice Sanctum of Ugin

If that mana is spent on a creature spell

Set: Magic 2010 Type: Enchantment Rarity: Rare Cost: {4}{G}{G} Whenever an opponent casts a spell

if you control no creatures

Set: Onslaught Type: Instant Rarity: Rare Cost: {B}{B} Until end of turn

Counterspell (Japanese Foil Etched) [Strixhaven Mystical Archive] Cockatrice you may sacrifice Sanctum ofSet: Strixhaven Mystical Archive Type: Instant Rarity: Rare Cost: {U}{U} Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard. "One need not know the specific details of a spell to suppress its effect. Simply rearrange the rules of the reality within which the spell operates."