Rhulk, The First Disciple

{b}{r}: Destroy target creature with power 5
or less. You lose 2 life.
When Rhulk, the First Disciple enters the battlefield, each opponent gets an emblem with
"{t}: During your untap step, untap only one
creature. Tap any that are untapped."
Rhulk, the First Disciple cannot be damaged by
Blue, Green, or White sources.