Promise of Loyalty
Murders at Karlov Manor Commander (MKC #79)
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Promise of Loyalty
CMC: 5
Type
Sorcery
Rules Text
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.
Printing
Murders at Karlov Manor Commander (MKC #79)
rare
Illustrated by Sara Winters