M:tG card similarity search
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.)
| Name | Mana | Type | Text |
|---|---|---|---|
| Iron Star | 1 | Artifact | Whenever a player casts a red spell, you may pay {1}. If you do, you gain 1 life. |
| Malachite Talisman | 2 | Artifact | Whenever a player casts a green spell, you may pay {3}. If you do, untap target permanent. |
| North Star | 4 | Artifact | {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.) |
| Force of Negation | 1UU | Instant | If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. |
| Damping Sphere | 2 | Artifact | If a land is tapped for two or more mana, it produces {C} instead of any other type and amount. Each spell a player casts costs {1} more to cast for each other spell that player has cast this turn. |
| Omniscience | 7UUU | Enchantment | You may cast spells from your hand without paying their mana costs. |
| Throne of Bone | 1 | Artifact | Whenever a player casts a black spell, you may pay {1}. If you do, you gain 1 life. |
| Withering Boon | 1B | Instant | As an additional cost to cast this spell, pay 3 life. Counter target creature spell. |
| Grenzo, Crooked Jailer | 4BR | Legendary Creature — Goblin Rogue | When Grenzo enters the battlefield and at the beginning of your upkeep, heist target opponent's library. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast that you don't own. 6/4 |
| Pulverize | 4RR | Sorcery | You may sacrifice two Mountains rather than pay this spell's mana cost. Destroy all artifacts. |