Volition Reins
Enchantment — Aura
Enchant permanent
When this Aura enters, if enchanted permanent is tapped, untap it.
You control enchanted permanent.
"Glorifying the will is a mistake. It is simply one more force to be mastered."
Svetlin Velinov
Scars of Mirrodin (SOM)
• #53Rulings
If the enchanted permanent is untapped as Volition Reins enters, the triggered ability won't trigger at all.
(wotc • 2011-01-01)
Gaining control of a permanent doesn't cause you to gain control of any Auras or Equipment attached to it.
(wotc • 2011-01-01)
Volition Reins may target and may enchant an untapped permanent.
(wotc • 2011-01-01)
Rulings
If the enchanted permanent is untapped as Volition Reins enters, the triggered ability won't trigger at all.
(wotc • 2011-01-01)
Gaining control of a permanent doesn't cause you to gain control of any Auras or Equipment attached to it.
(wotc • 2011-01-01)
Volition Reins may target and may enchant an untapped permanent.
(wotc • 2011-01-01)