M:tG card similarity search
1BR · Enchantment
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.) At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with mana value less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. When Corrosion leaves the battlefield, remove all rust counters from all permanents.
| Name | Mana | Type | Text |
|---|---|---|---|
| Urborg Stalker | 3B | Creature — Horror | At the beginning of each player's upkeep, if that player controls a nonblack, nonland permanent, Urborg Stalker deals 1 damage to that player. 2/4 |
| March of Souls | 4W | Sorcery | Destroy all creatures. They can't be regenerated. For each creature destroyed this way, its controller creates a 1/1 white Spirit creature token with flying. |
| Hydra's Growth | 2G | Enchantment — Aura | Enchant creature When Hydra's Growth enters the battlefield, put a +1/+1 counter on enchanted creature. At the beginning of your upkeep, double the number of +1/+1 counters on enchanted creature. |
| Tidy Conclusion | 3BB | Instant | Destroy target creature. You gain 1 life for each artifact you control. |
| Blightwing Whelp | 2B | Creature — Phyrexian Imp | Flying Toxic 1 {B}: Blightwing Whelp gains haste until end of turn. Whenever Blightwing Whelp deals combat damage to a player, seek a card with mana value equal to the number of poison counters that player has. 2/2 |
| Koma, Cosmos Serpent | 3GGUU | Legendary Creature — Serpent | This spell can't be countered. At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil. Sacrifice another Serpent: Choose one — • Tap target permanent. Its activated abilities can't be activated this turn. • Koma, Cosmos Serpent gains indestructible until end of turn. 6/6 |
| Spinal Villain | 2R | Creature — Beast | {T}: Destroy target blue creature. 1/2 |
| Agadeem's Awakening | XBBB | Sorcery | Return from your graveyard to the battlefield any number of target creature cards that each have a different mana value X or less. |
| Mind Games | U | Instant | Buyback {2}{U} (You may pay an additional {2}{U} as you cast this spell. If you do, put this card into your hand as it resolves.) Tap target artifact, creature, or land. |
| Cathar Commando | 1W | Creature — Human Soldier | Flash {1}, Sacrifice Cathar Commando: Destroy target artifact or enchantment. 3/1 |