Spoka, Possessed Oathspeaker

When Spoka, Possessed Oathspeaker deals
combat damage to a player, that player can't
speak until the end of their next turn.
If that player would speak for any reason
before their next turn, you may gain control
of target permanent that player controls.
{2}{w/b}{w/b}{t} Gain control of target creature.
"To be mute is to be wise."