Leonin Relic-Warder

When Leonin Relic-Warder enters, you may exile target artifact or enchantment.
When Leonin Relic-Warder leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Copy Enchantment

You may have Copy Enchantment enter as a copy of any enchantment on the battlefield.

Oblivion Ring

When Oblivion Ring enters, exile another target nonland permanent.
When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Altar of the Brood

Whenever another permanent you control enters, each opponent mills a card.

Mirrormade

You may have Mirrormade enter as a copy of any artifact or enchantment on the battlefield.

Sage of Mysteries

Constellation — Whenever an enchantment you control enters, target player mills two cards.

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