M:tG card similarity search
2BB · World Enchantment
At the beginning of your upkeep, sacrifice Koskun Falls unless you tap an untapped creature you control. Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Chained Throatseeker | 5U | Creature — Phyrexian Horror | Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Chained Throatseeker can't attack unless defending player is poisoned. 5/5 | 
| Carnophage | B | Creature — Zombie | At the beginning of your upkeep, tap Carnophage unless you pay 1 life. 2/2 | 
| Sangrophage | BB | Creature — Zombie | At the beginning of your upkeep, tap Sangrophage unless you pay 2 life. 3/3 | 
| War Falcon | W | Creature — Bird | Flying War Falcon can't attack unless you control a Knight or a Soldier. 2/1 | 
| Carnivorous Death-Parrot | 1U | Creature — Bird | Flying At the beginning of your upkeep, sacrifice Carnivorous Death-Parrot unless you say its flavor text. 2/2 | 
| Lithophage | 3RR | Creature — Insect | At the beginning of your upkeep, sacrifice Lithophage unless you sacrifice a Mountain. 7/7 | 
| 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 | 
| Cowed by Wisdom | W | Enchantment — Aura | Enchant creature Enchanted creature can't attack or block unless its controller pays {1} for each card in your hand. | 
| Forbidding Spirit | 1WW | Creature — Spirit Cleric | When Forbidding Spirit enters the battlefield, until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays {2} for each of those creatures. 3/3 | 
| Qal Sisma Behemoth | 2R | Creature — Ogre Warrior | Qal Sisma Behemoth can't attack or block unless you pay {2}. 5/5 |