Flying

At the beginning of your upkeep, put a +1/+1 counter on Phantasmal Sphere. During your upkeep, pay for each of these +1/+1 counters or bury Phantasmal Sphere.

If Phantasmal Sphere leaves play, put an Orb token into play under target opponent's control. Treat this token as a */* blue creature with flying, where * is equal to the number of these +1/+1 counters on Phantasmal Sphere.