Gustav, of the Cause

Vigilance, Foretelling (Whenever an opponent casts
a spell, this creature gets +1/+1 until end of turn.)
At the beginning of combat on each opponents
turn, choose target creature they control. Tap it,
it doesn't untap during their next untap step.
"The nightmares are upon us. If we are to restore
peace to our home, we all must have the courage
to face these horrors."