M:tG card similarity search
| Name | Mana | Type | Text |
|---|---|---|---|
| Sea Legs | U | Enchantment — Aura | Flash Enchant creature Enchanted creature gets +0/+2 as long as it's a Pirate. Otherwise, it gets -2/-0. |
| Rookie Mistake | U | Instant | Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0. |
| Downsize | U | Instant | Target creature you don't control gets -4/-0 until end of turn. Overload {2}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.") |
| Necropolis Fiend | 7BB | Creature — Demon | Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Flying {X}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn. 4/5 |
| Clutch of Undeath | 3BB | Enchantment — Aura | Enchant creature Enchanted creature gets +3/+3 as long as it's a Zombie. Otherwise, it gets -3/-3. |
| Consumptive Goo | BB | Creature — Ooze | {2}{B}{B}: Target creature gets -1/-1 until end of turn. Put a +1/+1 counter on Consumptive Goo. 1/1 |
| Serra's Boon | 2W | Enchantment — Aura | Enchant creature Enchanted creature gets +1/+2 as long as it's white. Otherwise, it gets -2/-1. |
| Phyrexian Boon | 2B | Enchantment — Aura | Enchant creature Enchanted creature gets +2/+1 as long as it's black. Otherwise, it gets -1/-2. |
| Cloudkill | 4BB | Sorcery | All creatures get -X/-X until end of turn, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. |
| Dead of Winter | 2B | Sorcery | All nonsnow creatures get -X/-X until end of turn, where X is the number of snow permanents you control. |