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 |
|---|---|---|---|
| Terra Ravager | 2RR | Creature — Elemental Beast | Whenever Terra Ravager attacks, it gets +X/+0 until end of turn, where X is the number of lands defending player controls. 0/4 |
| Lavaclaw Reaches | Land | Lavaclaw Reaches enters the battlefield tapped. {T}: Add {B} or {R}. {1}{B}{R}: Until end of turn, Lavaclaw Reaches becomes a 2/2 black and red Elemental creature with "{X}: This creature gets +X/+0 until end of turn." It's still a land. | |
| Bite of the Black Rose | 3B | Sorcery | Will of the council — Starting with you, each player votes for sickness or psychosis. If sickness gets more votes, creatures your opponents control get -2/-2 until end of turn. If psychosis gets more votes or the vote is tied, each opponent discards two cards. |
| Obsidian Obelisk | 2 | Artifact | Obsidian Obelisk enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a multicolored spell. |
| Cryptolith Fragment | 3 | Artifact | Cryptolith Fragment enters the battlefield tapped. {T}: Add one mana of any color. Each player loses 1 life. At the beginning of your upkeep, if each player has 10 or less life, transform Cryptolith Fragment. |
| Barbed-Back Wurm | 4B | Creature — Wurm | {B}: Target green creature blocking Barbed-Back Wurm gets -1/-1 until end of turn. 4/3 |
| Path of Ancestry | Land | Path of Ancestry enters the battlefield tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.) | |
| Demonic Appetite | B | Enchantment — Aura | Enchant creature you control Enchanted creature gets +3/+3. At the beginning of your upkeep, sacrifice a creature. |
| Get a Leg Up | G | Instant | Until end of turn, target creature gets +1/+1 for each creature you control and gains reach. |
| Tidal Force | 5UUU | Creature — Elemental | At the beginning of each upkeep, you may tap or untap target permanent. 7/7 |