Zharalek, Void Epitaph

Annihilator {x}, Trample, Flying. When you cast Zharalek, you put a colorless permanent equal to
or less than Zharalek's mana value onto the battlefield.
{7} Draw a card: costs {1} less for each colorless permanent. Zharalek Enters the battlefield
with {x} +1/+1 counters on. For each counters on Zharalek, each Eldrazi creature costs {x} less to cast.
~ Husks of worlds, consumer of all.