Promise of Loyalty
Secrets of Strixhaven Commander (SOC #161)
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
Secrets of Strixhaven Commander (SOC #161)
rare
Illustrated by Sara Winters