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 |
|---|---|---|---|
| Wirewood Pride | G | Instant | Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield. |
| Mandatory Friendship Shackles | Artifact — Contraption | Whenever you crank Mandatory Friendship Shackles, target creature gets -1/-1 until end of turn. | |
| More or Less | U | Instant | Add or subtract 1 or one from a number or number word on target spell or permanent until end of turn. |
| Consume Strength | 1BG | Instant | Target creature gets +2/+2 until end of turn. Another target creature gets -2/-2 until end of turn. |
| Leeching Bite | 1G | Instant | Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn. |
| Rites of Reaping | 4BG | Sorcery | Target creature gets +3/+3 until end of turn. Another target creature gets -3/-3 until end of turn. |
| Schismotivate | 1UR | Instant | Target creature gets +4/+0 until end of turn. Another target creature gets -4/-0 until end of turn. |
| Steal Strength | 1B | Instant | Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn. |
| Festergloom | 2B | Sorcery | Nonblack creatures get -1/-1 until end of turn. |
| Inner Demon | 2BB | Enchantment — Aura | Enchant creature Enchanted creature gets +2/+2, has flying, and is a Demon in addition to its other types. When Inner Demon enters the battlefield, all non-Demon creatures get -2/-2 until end of turn. |