Reifok, Dream Ender

{1}{u/b}{u/b}: Reifok corrupts a creature an opponent
controls. Activate this ability up to three times
per turn. (When a creature is corrupted, the creature
which corrupted it gains all of it's effects.)
If any effects would trigger from Reifok, Dream
Ender entering the battlefield, they trigger at the
beginning of the next main phase instead.
"The very concept of nightmares itself."