Nasty creature card. The core ability Undying means that after the card is placed in the graveyard and doesn’t already have a marker on it, it can be placed back on the battlefield in the control of the original caster with a +1/+1 marker. You just can’t keep the daedra down for long, especially the big guy.
UPDATED 1/16/15 to make him more powerful, as the Big Bad of ESO should be.
Collaboration with the hubby and my girl wilvarin1980.wordpress.com, who took the screenshot
Screenshots courtesy of Zenimax Online Studios
Card made at http://www.mtgcardsmith.com.