Mirror of Life Trapping

Whenever a creature enters, if there are two or more other creatures on the battlefield, exile that creature. Return that card to the battlefield under its owner's control when this artifact leaves the battlefield.

You may choose not to untap this artifact during your untap step.

, : Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When this artifact leaves the battlefield or becomes untapped, return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it. If you do, return the other exiled cards to the battlefield under their owner's control attached to that permanent.

: Exile target creature you control.

Sacrifice this artifact: Return each creature card exiled with this artifact to the battlefield under your control.

, : Exile target creature you control.

, : Exile target creature you don't control.

When Helvault is put into a graveyard from the battlefield, return all cards exiled with it to the battlefield under their owners' control.

Imprint — When this creature enters, you may exile a card from your hand face down.

When this creature dies, turn the exiled card face up. If it's a creature card, put it onto the battlefield under your control.

When this artifact enters, exile all creatures with power 5 or greater until this artifact leaves the battlefield. (Those creatures return under their owners' control.)