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 |
|---|---|---|---|
| Coral Net | U | Enchantment — Aura | Enchant green or white creature Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card." |
| Deep Water | UU | Enchantment | {U}: Until end of turn, if you tap a land you control for mana, it produces {U} instead of any other type. |
| Koskun Falls | 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. |
| Mold Demon | 5BB | Creature — Fungus Demon | When Mold Demon enters the battlefield, sacrifice it unless you sacrifice two Swamps. 6/6 |
| Innocent Blood | B | Sorcery | Each player sacrifices a creature. |
| Tolarian Serpent | 5UU | Creature — Serpent | At the beginning of your upkeep, mill seven cards. 7/7 |
| Barbarian Outcast | 1R | Creature — Human Barbarian Beast | When you control no Swamps, sacrifice Barbarian Outcast. 2/2 |
| Hag of Twisted Visions | 2B | Creature — Hag Warlock | At the beginning of your upkeep, scry 2. 2/2 |
| Hanweir Militia Captain | 1W | Creature — Human Soldier | At the beginning of your upkeep, if you control four or more creatures, transform Hanweir Militia Captain. 2/2 |
| Jinxed Idol | 2 | Artifact | At the beginning of your upkeep, Jinxed Idol deals 2 damage to you. Sacrifice a creature: Target opponent gains control of Jinxed Idol. |