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 |
|---|---|---|---|
| Primeval Shambler | 4B | Creature — Horror Mercenary | {B}: Primeval Shambler gets +1/+1 until end of turn. 3/3 |
| Dauthi Warlord | 1B | Creature — Dauthi Soldier | Shadow (This creature can block or be blocked by only creatures with shadow.) Dauthi Warlord's power is equal to the number of creatures with shadow on the battlefield. */1 |
| Ixalli's Keeper | 1G | Creature — Human Shaman | {7}{G}, {T}, Sacrifice Ixalli's Keeper: Target creature gets +5/+5 and gains trample until end of turn. 2/2 |
| Mossbridge Troll | 5GG | Creature — Troll | If Mossbridge Troll would be destroyed, regenerate it. Tap any number of untapped creatures you control other than Mossbridge Troll with total power 10 or greater: Mossbridge Troll gets +20/+20 until end of turn. 5/5 |
| Base Camp | Land | Base Camp enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Cleric, Rogue, Warrior, or Wizard spell or to activate an ability of a Cleric, Rogue, Warrior, or Wizard. | |
| Cultural Exchange | 4UU | Sorcery | Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.) |
| A-Acererak the Archlich | 2B | Legendary Creature — Zombie Wizard | When Acererak the Archlich enters the battlefield, if you haven't completed Tomb of Annihilation, return Acererak the Archlich to its owner's hand and venture into the dungeon. Whenever Acererak the Archlich attacks, create a number of 2/2 black Zombie creature tokens equal to the number of opponents you have. 5/5 |
| Henchfiend of Ukor | 3R | Creature — Ogre | Haste Echo {1}{B} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) {B/R}: Henchfiend of Ukor gets +1/+0 until end of turn. 3/2 |
| Ashling's Prerogative | 1R | Enchantment | As Ashling's Prerogative enters the battlefield, choose odd or even. (Zero is even.) Each creature with mana value of the chosen quality has haste. Each creature without mana value of the chosen quality enters the battlefield tapped. |
| Stone Kavu | 4G | Creature — Kavu | {R}: Stone Kavu gets +1/+0 until end of turn. {W}: Stone Kavu gets +0/+1 until end of turn. 3/3 |