Enchantment — Aura, U (1)
Uncommon
Enchant red or green creature
Enchanted creature doesn't untap during its controller's untap step.
Togk Manytooth struggled helplessly as the kathari circled above him. For a warrior, immobilization is a fate worse than death.
Illus. Ralph Horsley

2/1/2009: Controlled Instincts may target and may enchant an untapped creature.
2/1/2009: Controlled Instincts can enchant only a creature that's red or green. If at any time the enchanted creature is neither red nor green, Controlled Instincts is put into its owner's graveyard as a state-based action.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern