Atraxa

Flying, Vigilance, Deathtouch, Lifelink,
Toxic 1
{p/c}{p/u}{p/b}{p/g}: Exile Atraxa, then return it to the battlefield transformed under its owner's control
(see conquer the multiverse). Activate only as a sorcery and if an opponent has
five or more poison counters.
Atraxa did not only unite the nine spheres under
Elesh Norn, but was a champion to New
Phyrexia.