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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
Naya Plane — Alara You may play any number of lands on each of your turns. Whenever chaos ensues, target red, green, or white creature you control gets +1/+1 until end of turn for each land you control.
Mercadia's Downfall 2RInstant Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls.
Sasaya's Essence Legendary Enchantment Whenever a land you control is tapped for mana, add an additional one mana of any type that land produced for each other land you control with the same name as it.
Consuming Fervor REnchantment — Aura Enchant creature Enchanted creature gets +3/+3 and has "At the beginning of your upkeep, put a -1/-1 counter on this creature."
Wave of Terror 2BEnchantment Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of your draw step, destroy each creature with mana value equal to the number of age counters on Wave of Terror. They can't be regenerated.
Slayers' Stronghold Land {T}: Add {C}. {R}{W}, {T}: Target creature gets +2/+0 and gains vigilance and haste until end of turn.
Spontaneous Flight 2WInstant Target creature gets +2/+2 until end of turn. Put a flying counter on it.
Flailing Soldier RCreature — Human Soldier {1}: Flailing Soldier gets +1/+1 until end of turn. Any player may activate this ability. {1}: Flailing Soldier gets -1/-1 until end of turn. Any player may activate this ability. 2/2
Defiler of Souls 3BBRCreature — Demon Flying At the beginning of each player's upkeep, that player sacrifices a monocolored creature. 5/5
Rune-Brand Juggler BRCreature — Human Shaman When Rune-Brand Juggler enters the battlefield, suspect up to one target creature you control. (A suspected creature has menace and can't block.) {3}{B}{R}, Sacrifice a suspected creature: Target creature gets -5/-5 until end of turn. 2/2
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