Morokei, the Deathless

Flying, deathtouch
Morokei gets +3/+3 as long as a creature was
put into a graveyard from anywhere this turn.
{4}{u}{b}: Return Morokei from your graveyard
to the battlefield. Activate this ability only if a
graveyard has twenty or more cards in it
"Who comes to my dark kingdom? Cowardly men
will find no mercy here."