Elesh Norn, Grand Cenobite

Vigilance
Other creatures you control get +2/+2.
Creatures your opponents control get -2/-2.

Soon, even her most adamant foes will call her . . . MOTHER!

Secret Lair Drop

"Rejoice, blessed evangels! The glorious light of *compleation* is nigh. Soon, we shall awaken the Multiverse from its slumber."

Multiverse Legends

"The Gitaxians whisper among themselves of other worlds. If they exist, we must bring Phyrexia's magnificence to them."

If a second Elesh Norn, Grand Cenobite comes under your control, you'll put one into its owner's graveyard due to the “legend rule” at the same time that any of your opponents' creatures getting -4/-4 are put into their owner's graveyard for having 0 or less toughness.