M:tG card similarity search
2B · Enchantment
At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.
| Name | Mana | Type | Text |
|---|---|---|---|
| Kataki, War's Wage | 1W | Legendary Creature — Spirit | All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}." 2/1 |
| Custody Battle | 1R | Enchantment — Aura | Enchant creature Enchanted creature has "At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land." |
| Vaporous Djinn | 2UU | Creature — Djinn | Flying At the beginning of your upkeep, Vaporous Djinn phases out unless you pay {U}{U}. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.) 3/4 |
| Brink of Madness | 2BB | Enchantment | At the beginning of your upkeep, if you have no cards in hand, sacrifice Brink of Madness and target opponent discards their hand. |
| Blighted Fen | Land | {T}: Add {C}. {4}{B}, {T}, Sacrifice Blighted Fen: Target opponent sacrifices a creature. | |
| Archdemon of Greed | Creature — Demon | Flying, trample At the beginning of your upkeep, sacrifice a Human. If you can't, tap Archdemon of Greed and it deals 9 damage to you. 9/9 | |
| Uktabi Efreet | 2GG | Creature — Efreet | Cumulative upkeep {G} (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.) 5/4 |
| Breeding Pit | 3B | Enchantment | At the beginning of your upkeep, sacrifice Breeding Pit unless you pay {B}{B}. At the beginning of your end step, create a 0/1 black Thrull creature token. |
| Sultai Ascendancy | BGU | Enchantment | At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) |
| Think Tank | 2U | Enchantment | At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) |