Skarduun, the Returned

Vigilance, Reach, Shroud
When Skarduun, the Returned enters the battlefield search your library or graveyard
for a mammoth card and put it into your hand.
{5}{t}: Put target white creature card with mana
cost less than your devotion to white onto the battlefield, then target player mills cards from the
top of their deck equal to your devotion to blue,
then loses life equal to your devotion to black,
and you gain life equal to your devotion to
green.