Sinraffa, the True Blade

+2: Each opponent may vow to not attack this planeswalker during their next turn. If a player does not, create a 2/2 black knight with menace.
-3: Put a +1/+1 counter on up to 2 target creatures. If you are the monarch, up to 4 creature get those counters instead.
-11: You get an emblem with "All creatures you control with vow get +3/+3 and indestructible".