Dagur the Deranged

Menace

Enrage — Whenever Dagur the Deranged is dealt
damage, gain control of target artifact or creature
an opponent controls with mana value less than
Dagur's power for as long as you control Dagur the Deranged.

Whenever an opponent casts a non-artifact
non-creature spell, they may deal 1 damage to Dagur
the Deranged.