Mother of the Void

{5}, Discard a colorless spell: Mother of the Void
gains +X/+X until end of turn, where X is the
total casting cost of the discarded card.
{t}, {5}, Discard a colorless spell: Create X 1/1 colorless voidling creature tokens with:
"Haste, Crumbling, and "Sacrifice this creature at
end of turn", where X is the casting cost of the discarded card.