When Ezuri, Stalker of Spheres enters the battlefield, you may pay {3}. If you do, proliferate twice. Whenever you proliferate, draw a card.

Flying If you would proliferate, proliferate twice instead. {1}{U/P}{U/P}, Remove three counters from among other artifacts, creatures, and planeswalkers you control: Put an indestructible counter on Tekuthal, Inquiry Dominus. ({U/P} can be paid with either {U} or 2 life.)