Each player puts a vow counter on a creature they control and sacrifices the rest. Each of those creatures can't attack you or planeswalkers you control for as long as it has a vow counter on it.
Digital-only printing
No paper market price
Promise of Loyalty from Magic Online Promos is a digital-only printing (MTG Arena or Magic Online). This printing has no physical card, so TCGplayer and Cardmarket paper prices do not apply.
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