Tidal Force
Commander 2013 — Rare
Creature — Elemental
Sets Tidal Force has been printed in:

Commander 2013 — Rare
Creature — Elemental
Sets Tidal Force has been printed in:

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Legendary Creature — Serpent (6/6)
This spell can't be countered.
At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.
Sacrifice another Serpent: Choose one —
• Tap target permanent. Its activated abilities can't be activated this turn.
• Koma, Cosmos Serpent gains indestructible until end of turn.
Legendary Creature — Elder Dragon (4/4)
Flying
At the beginning of each upkeep, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."
Pay 10 life: Untap all lands you control. Activate only once each turn.
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 . 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.
Enchantment — Aura
Enchant creature
At the beginning of each upkeep, if enchanted creature is untapped, tap it.
Creature — Human Werewolf // Creature — Werewolf (3/2)
At the beginning of each upkeep, if no spells were cast last turn, transform Afflicted Deserter.
Werewolf Ransacker
Whenever this creature transforms into Werewolf Ransacker, you may destroy target artifact. If that artifact is put into a graveyard this way, Werewolf Ransacker deals 3 damage to that artifact's controller.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Werewolf Ransacker.
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