Azathoth, Blind Chaos

(you cannot cast this card for it's Mana cost.)
Omnipresence- reveal Azathoth, Blind Chaos from your hand, each player may exile their hand and draw 7 cards, if not, cast this card without paying it's mana cost.
For every 7 cards exiled this way, put a +1/+1 counter on Azathoth, Blind Chaos.