"When glaring aegis enters the battlefield, tap target creature opponent controls."
Does the creature get to untap on its controllers untap phase or is it permanently tapped?
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-MadMage
Yes, it gets to untap like any other permanent during the controller's untap step. The effect does not prevent untapping at all, all it does is tap the permanent now, as the ability resolves, it does not keep it tapped for any period of time. Effects keeping a permanent tapped during a player's untap step will explicitly say so, e.g. Claustrophobia, Crippling Chill, Dungeon Geists, etc.
And even so, those effects don't keep that permanent from becoming untapped at any other time than they state, including during other untap steps. For example, such a permanent can become untapped due to Twiddle, even while such an effect is active on it. See also this thread.
Does the creature get to untap on its controllers untap phase or is it permanently tapped?
Using card tags is mandatory in the Magic Rulings forum. Please check your private messages to learn how to use them. I've added them for this post.
-MadMage
Yes, it gets to untap like any other permanent during the controller's untap step. The effect does not prevent untapping at all, all it does is tap the permanent now, as the ability resolves, it does not keep it tapped for any period of time. Effects keeping a permanent tapped during a player's untap step will explicitly say so, e.g. Claustrophobia, Crippling Chill, Dungeon Geists, etc.
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