M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Necro-Impotence | BBB | Enchantment | Skip your untap step. At the beginning of your upkeep, you may pay X life. If you do, untap X permanents. Pay ½ life: Exile the top card of your library face down. Put that card into your hand at the beginning of the next end step. |
| Golden Urn | 1 | Artifact | At the beginning of your upkeep, you may put a charge counter on Golden Urn. {T}, Sacrifice Golden Urn: You gain life equal to the number of charge counters on Golden Urn. |
| Thumbscrews | 2 | Artifact | At the beginning of your upkeep, if you have five or more cards in hand, Thumbscrews deals 1 damage to target opponent or planeswalker. |
| Octo Opus | 3UU | Enchantment | When Octo Opus enters the battlefield, create a 4/4 blue Octopus Performer creature token named Contortionist with "At the beginning of your upkeep, you may fold this token in half." (It becomes 2/2, then 1/1, ½/½, and so on.) Sacrifice Octo Opus: Draw a card and an additional card for each of Contortionist's folds. |
| Kessig Forgemaster | 1R | Creature — Human Shaman Werewolf | Whenever Kessig Forgemaster blocks or becomes blocked by a creature, Kessig Forgemaster deals 1 damage to that creature. At the beginning of each upkeep, if no spells were cast last turn, transform Kessig Forgemaster. 2/1 |
| Mana Vault | 1 | Artifact | Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}. |
| Erebos, God of the Dead | 3B | Legendary Enchantment Creature — God | Indestructible As long as your devotion to black is less than five, Erebos isn't a creature. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.) Your opponents can't gain life. {1}{B}, Pay 2 life: Draw a card. 5/7 |
| Treacherous Greed | 1WB | Instant | As an additional cost to cast this spell, sacrifice a creature that dealt damage this turn. Draw three cards. Each opponent loses 3 life and you gain 3 life. |
| Revered Unicorn | 1W | Creature — Unicorn | 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.) When Revered Unicorn leaves the battlefield, you gain life equal to the number of age counters on it. 2/3 |
| Shadowborn Demon | 3BB | Creature — Demon | Flying When Shadowborn Demon enters the battlefield, destroy target non-Demon creature. At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature. 5/6 |