Maervaenn, Thirsty Maestro

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color
with it.)
{x}{r} Horny Jail - reveal the top X cards of your library. You may exile one legendary creature revealed this way.
{1}{b} ...Sorry - put a Thirst counter on target
exiled legendary creature. You may play exiled legendary creatures with Thirst counters on them
this turn.