Prayer of Binding
Flash
When this enchantment enters, exile up to one target nonland permanent an opponent controls until this enchantment leaves the battlefield. You gain 2 life.
When a Phyrexian agent cannot be killed, they must be contained.
Illustrated by Wylie Beckert
This printing
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If a token is exiled this way, it will cease to exist and won't return to the battlefield.
If Prayer of Binding leaves the battlefield before its triggered ability resolves, the target permanent won't be exiled.
If an Aura is exiled this way, its owner chooses what it will enchant as it returns to the battlefield. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to a permanent with shroud, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it remains in exile for the rest of the game.
Auras attached to the exiled permanent will be put into their owners' graveyards. Any Equipment will become unattached and remain on the battlefield. Any counters on the exiled permanent will cease to exist. When the card returns to the battlefield, it will be a new object with no connection to the card that was exiled.
You don't have to choose a target for Prayer of Binding's triggered ability. However, if you do and the target is illegal as the ability tries to resolve, it won't resolve and none of its effects will happen. You won't gain life.
