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 |
|---|---|---|---|
| The Tyrant | Hero | Exile The Tyrant: Creatures your opponents control get -1/-1 until end of turn. | |
| Ambergris, Agent of Tyranny | 2BR | Legendary Creature — Dwarf Cleric | Haste Whenever Ambergris, Agent of Tyranny attacks, you may discard your hand and draw two cards. When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the number of cards you've discarded this turn. 4/3 |
| Sarulf, Realm Eater | 1BG | Legendary Creature — Wolf | Whenever a permanent an opponent controls is put into a graveyard from the battlefield, put a +1/+1 counter on Sarulf, Realm Eater. At the beginning of your upkeep, if Sarulf has one or more +1/+1 counters on it, you may remove all of them. If you do, exile each other nonland permanent with mana value less than or equal to the number of counters removed this way. 3/3 |
| Feral Instinct | 1G | Instant | Target creature gets +1/+1 until end of turn. Draw a card at the beginning of the next turn's upkeep. |
| Fevered Strength | 2B | Instant | Target creature gets +2/+0 until end of turn. Draw a card at the beginning of the next turn's upkeep. |
| Scurry of Gremlins | 2RW | Enchantment | When Scurry of Gremlins enters the battlefield, create two 1/1 red Gremlin creature tokens. Then you get an amount of {E} (energy counters) equal to the number of creatures you control. Pay {E}{E}{E}{E}: Creatures you control get +1/+0 and gain haste until end of turn. |
| Cabal Pit | Land | {T}: Add {B}. Cabal Pit deals 1 damage to you. Threshold — {B}, {T}, Sacrifice Cabal Pit: Target creature gets -2/-2 until end of turn. Activate only if seven or more cards are in your graveyard. | |
| Agrus Kos, Wojek Veteran | 3RW | Legendary Creature — Human Soldier | Whenever Agrus Kos, Wojek Veteran attacks, attacking red creatures get +2/+0 and attacking white creatures get +0/+2 until end of turn. 3/3 |
| Burning Earth | 3R | Enchantment | Whenever a player taps a nonbasic land for mana, Burning Earth deals 1 damage to that player. |
| Akki War Paint | R | Enchantment — Aura | Enchant artifact or creature As long as enchanted permanent is a creature, it gets +2/+1. |