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17 May 2024: Card library updated.

Chaos Moon

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.

Similar cards

Color identity:
NameManaTypeText
A-Skemfar Elderhall Land Skemfar Elderhall enters the battlefield tapped. {T}: Add {G}. {1}{B}{B}{G}, {T}, Sacrifice Skemfar Elderhall: Up to one target creature you don't control gets -2/-2 until end of turn. Create two 1/1 green Elf Warrior creature tokens. Activate only as a sorcery.
Vial Smasher the Fierce 1BRLegendary Creature — Goblin Berserker Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher the Fierce deals damage equal to that spell's mana value to that player or a planeswalker that player controls. Partner (You can have two commanders if both have partner.) 2/3
Orzhov Pontiff 1WBCreature — Human Cleric Haunt (When this creature dies, exile it haunting target creature.) When Orzhov Pontiff enters the battlefield or the creature it haunts dies, choose one — • Creatures you control get +1/+1 until end of turn. • Creatures you don't control get -1/-1 until end of turn. 1/1
Dauthi Mercenary 2BCreature — Dauthi Knight Mercenary Shadow (This creature can block or be blocked by only creatures with shadow.) {1}{B}: Dauthi Mercenary gets +1/+0 until end of turn. 2/1
Force of Rage 1RRInstant If it's not your turn, you may exile a red card from your hand rather than pay this spell's mana cost. Create two 3/1 red Elemental creature tokens with trample and haste. Sacrifice those tokens at the beginning of your next upkeep.
Septic Rats 1BBCreature — Phyrexian Rat Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Whenever Septic Rats attacks, if defending player is poisoned, it gets +1/+1 until end of turn. 2/2
Deathbloom Ritualist 3BGCreature — Elf Warlock {T}: Add X mana of any one color, where X is the number of creature cards in your graveyard. 3/5
Standardize UUInstant Choose a creature type other than Wall. Each creature becomes that type until end of turn.
Law-Rune Enforcer WCreature — Human Soldier {1}, {T}: Tap target creature with mana value 2 or greater. 1/2
Erratic Cyclops 3RCreature — Cyclops Shaman Trample Whenever you cast an instant or sorcery spell, Erratic Cyclops gets +X/+0 until end of turn, where X is that spell's mana value. 0/8
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