M:tG card similarity search
3R · Enchantment
At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.
| Name | Mana | Type | Text |
|---|---|---|---|
| Grasp of Darkness | BB | Instant | Target creature gets -4/-4 until end of turn. |
| Hydrosurge | U | Instant | Target creature gets -5/-0 until end of turn. |
| Lash of the Whip | 4B | Instant | Target creature gets -4/-4 until end of turn. |
| Last Gasp | 1B | Instant | Target creature gets -3/-3 until end of turn. |
| Night | B | Instant | Target creature gets -1/-1 until end of turn. |
| Desperate Parry | 1U | Instant — Adventure | Target creature gets -4/-0 until end of turn. (Then exile this card. You may cast the creature later from exile.) |
| Pull Under | 5B | Instant — Arcane | Target creature gets -5/-5 until end of turn. |
| Shrink | G | Instant | Target creature gets -5/-0 until end of turn. |
| Staff of Zegon | 4 | Artifact | {3}, {T}: Target creature gets -2/-0 until end of turn. |
| Strangling Spores | 3B | Instant | Target creature gets -3/-3 until end of turn. |