Kingdom Colossus

Kingdom Colossus enters the battlefield
with X +1/+1 counters on it.
Whenever a creature leaves the battlefield,
put X +1/+1 counters on Kingdom Colossus
equal to that creature's toughness.
{4}{t}: Sacrifice Kingdom Colossus, create 1/1
colorless Thopter artifact creature tokens with
flying equal to the number of +1/+1 counters
on Kingdom Colossus.