Undead Emberskull

{x}: Create X copies of Undead Emberskull, each opponent loses X life. If you control an Ossex planeswalker, you create twice X copies of Undead Exberskull, and each opponent loses twice X life. You may only use this ability once per turn.
{b}{b}: Regenerate Undead Emberskull, and all copies of it that were put into a graveyard this turn.