Meandered Towershell 
Enchantment — Aura
Enchant creature
Enchanted creature has islandwalk and "Whenever this creature attacks, exile it and Meandered Towershell. Return it to the battlefield under your control tapped and attacking at the beginning of the declare attackers step on your next turn, then return Meandered Towershell to the battlefield under its owner's control attached to that creature."
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Cards that do something similar expected a card that isn't here?
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