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 |
|---|---|---|---|
| Glistening Deluge | 1BB | Sorcery | All creatures get -1/-1 until end of turn. Creatures that are green and/or white get an additional -2/-2 until end of turn. |
| Alpha Kavu | 2G | Creature — Kavu | {1}{G}: Target Kavu creature gets -1/+1 until end of turn. 2/2 |
| Bloodcurdling Scream | XB | Sorcery | Target creature gets +X/+0 until end of turn. |
| Enrage | XR | Instant | Target creature gets +X/+0 until end of turn. |
| Howl from Beyond | XB | Instant | Target creature gets +X/+0 until end of turn. |
| Ichor Slick | 2B | Sorcery | Target creature gets -3/-3 until end of turn. Cycling {2} ({2}, Discard this card: Draw a card.) Madness {3}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) |
| Constricting Tendrils | U | Instant | Target creature gets -3/-0 until end of turn. Cycling {2} ({2}, Discard this card: Draw a card.) |
| Karona, False God | 1WUBRG | Legendary Creature — Avatar | Haste At the beginning of each player's upkeep, that player untaps Karona, False God and gains control of it. Whenever Karona attacks, creatures of the creature type of your choice get +3/+3 until end of turn. 5/5 |
| Mephitic Vapors | 2B | Sorcery | All creatures get -1/-1 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) |
| Sudden Death | 1BB | Instant | Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Target creature gets -4/-4 until end of turn. |