Varric, Luedevic's Thrall

Menace, Trample, Haste
Varric, Ludevic's Thrall does not untap during
your untap step.
When an opponent activates a permanent's ability
that isn't a mana ability, untap
Varric, Ludevic's Thrall.
When Varric, Ludevic's Thrall leaves the battlefield, exile it instead.