All permanents on the battlefield. Avacyn's Collar attached to any creature you control. Arcane Adaptation naming "Human".
All permanents on the battlefield. Avacyn's Collar attached to any creature you control. Conspiracy naming "Human".
All permanents on the battlefield. You control a creature. Avacyn's Collar equipped to a creature you control.
All permanents on the battlefield. Avacyn's Collar attached to any creature you control. Xenograft naming "Human".