Zexion, Cloaked Schemer

Zexion enters with X page counters on him, and
has flying while he has 2 or more counters on him.

As an additional cost to cast an instant or sorcery spell, you may remove any number of page counters from among permanents you control. That spell costs {2} less to cast for each counter removed this way.

{1}, {t}: Put a page counter on Zexion.