Gishath, Undead Avatar

Trample, wither, first strike
At the beginning of your upkeep, mill X, where
X is the amount of life paid to cast Gishath, Undead Avatar.
Whenever Gishath, Undead Avatar deals combat damage to a player, at random, choose that many cards from your graveyard. Put any number of dinosaur creature cards onto the battlefield and the rest into your graveyard.