Promise of Loyalty is a rare Sorcery card from Magic: The Gathering (Murders at Karlov Manor Commander, MKC). Current market price: $0.28.
Rare
Murders at Karlov Manor Commander (MKC)
{4}{W}
Mana Value
5
Colors
W
Card 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.
