M:tG card similarity search
2 · Artifact
Whenever a player casts a green spell, you may pay {3}. If you do, untap target permanent.
| Name | Mana | Type | Text |
|---|---|---|---|
| Mystic Remora | U | Enchantment | Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}. |
| Stinging Lionfish | 1U | Enchantment Creature — Fish | Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent. 2/1 |
| Unifying Theory | 1U | Enchantment | Whenever a player casts a spell, that player may pay {2}. If the player does, they draw a card. |
| Crystal Rod | 1 | Artifact | Whenever a player casts a blue spell, you may pay {1}. If you do, you gain 1 life. |
| Nether Void | 3B | World Enchantment | Whenever a player casts a spell, counter it unless that player pays {3}. |
| Defiler of Vigor | 3GG | Creature — Phyrexian Wurm | Trample As an additional cost to cast green permanent spells, you may pay 2 life. Those spells cost {G} less to cast if you paid life this way. This effect reduces only the amount of green mana you pay. Whenever you cast a green permanent spell, put a +1/+1 counter on each creature you control. 6/6 |
| Ice Cave | 3UU | Enchantment | Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. (Mana cost includes color.) |
| Merrow Reejerey | 2U | Creature — Merfolk Soldier | Other Merfolk creatures you control get +1/+1. Whenever you cast a Merfolk spell, you may tap or untap target permanent. 2/2 |
| Paradox Engine | 5 | Legendary Artifact | Whenever you cast a spell, untap all nonland permanents you control. |
| Chancellor of the Annex | 4WWW | 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}. 5/6 |