Motruit

Ward {4} Flying, Trample, Lifelink
Avatar spells you cast with mana value 6 or less
cost {1} more to cast, and has "when this creature
enters the battlefield draw two cards."
Whenever you cast an avatar, copy it, then add
an amount of mana in any combination of colors
equal to half the mana value of the spell cast.
Motruit, mother of Progenitus.