M:tG card similarity search
· Plane — Karsus
Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell. Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.
| Name | Mana | Type | Text |
|---|---|---|---|
| Xanathar, Guild Kingpin | 4UB | Legendary Creature — Beholder | At the beginning of your upkeep, choose target opponent. Until end of turn, that player can't cast spells, you may look at the top card of their library any time, you may play the top card of their library, and you may spend mana as though it were mana of any color to cast spells this way. 5/6 |
| Rhystic Study | 2U | Enchantment | Whenever an opponent casts a spell, you may draw a card unless that player pays {1}. |
| Havoc | 1R | Enchantment | Whenever an opponent casts a white spell, they lose 2 life. |
| Painful Quandary | 3BB | Enchantment | Whenever an opponent casts a spell, that player loses 5 life unless they discard a card. |
| Talent of the Telepath | 2UU | Sorcery | Target opponent reveals the top seven cards of their library. You may cast an instant or sorcery spell from among them without paying its mana cost. Then that player puts the rest into their graveyard. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may cast up to two instant and/or sorcery spells from among the revealed cards instead of one. |
| Gix, Yawgmoth Praetor | 1BB | Legendary Creature — Phyrexian Praetor | Whenever a creature deals combat damage to one of your opponents, its controller may pay 1 life. If they do, they draw a card. {4}{B}{B}{B}, Discard X cards: Exile the top X cards of target opponent's library. You may play lands and cast spells from among cards exiled this way without paying their mana costs. 3/3 |
| Presence of the Master | 3W | Enchantment | Whenever a player casts an enchantment spell, counter it. |
| 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. |
| Mindbreak Trap | 2UU | Instant — Trap | If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost. Exile any number of target spells. |
| Heartwood Storyteller | 1GG | Creature — Treefolk | Whenever a player casts a noncreature spell, each of that player's opponents may draw a card. 2/3 |