Astrea, Reawakening

Astrea, Reawakening enters the battlefield with
seven spirit counters
When a spirit counter is removed from Astrea, Reawakening create a X X/X spirit creature
tokens with flying and hexproof, where X is the
number of spirit counters on Astrea, Reawakening.
{1},{t}: add {u}{b}{r} remove a spirit counter from Astrea, Reawakening