M:tG card similarity search
1U · Creature — Fish
At the beginning of your upkeep, sacrifice School of Piranha unless you pay {1}{U}. 3/3
| Name | Mana | Type | Text | 
|---|---|---|---|
| Territorial Dispute | 4RR | Enchantment | At the beginning of your upkeep, sacrifice Territorial Dispute unless you sacrifice a land. Players can't play lands. | 
| 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 | 
| Half-Shark, Half- | Creature — Shark | At the beginning of your upkeep, Augment {5}{U} ({5}{U}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.) +3/+3 | |
| Growing Ranks | 2G/WG/W | Enchantment | At the beginning of your upkeep, populate. (Create a token that's a copy of a creature token you control.) | 
| Nicol Bolas | 2UUBBRR | Legendary Creature — Elder Dragon | Flying At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay {U}{B}{R}. Whenever Nicol Bolas deals damage to an opponent, that player discards their hand. 7/7 | 
| Indulgent Tormentor | 3BB | Creature — Demon | Flying At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life. 5/3 | 
| Kuro, Pitlord | 6BBB | Legendary Creature — Demon Spirit | At the beginning of your upkeep, sacrifice Kuro, Pitlord unless you pay {B}{B}{B}{B}. Pay 1 life: Target creature gets -1/-1 until end of turn. 9/9 | 
| Painwracker Oni | 3BB | Creature — Demon Spirit | Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) At the beginning of your upkeep, sacrifice a creature if you don't control an Ogre. 5/4 | 
| Pit Spawn | 4BBB | Creature — Demon | First strike At the beginning of your upkeep, sacrifice Pit Spawn unless you pay {B}{B}. Whenever Pit Spawn deals damage to a creature, exile that creature. 6/4 | 
| 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 |