Air Cadet Training

{r/w}: Put an advancement counter on this
Enchantment.
At he beginning of your upkeep, you may remove
any number of advancement counters from this Enchantment. If you do, create that many White
1/1 Pilot creature tokens with Pilot 3. You may
have those creatures enter the battlefield tapped
with X +1/+1 counters on them and X stun
counters on them.