Requital

If a permanent you or a teammate controls is the target of a spell with a converted mana cost 4 or greater, put that spell and each other spell with
the same name as that spell on top of its owner's library. Target spell's controller can't cast spells
with the same name as that spell until the
beginning of their next end step.
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"Stay vigilant outside these walls."
- Hazduhr the Abbot