Gearsteam, Clockwork Train

When Gearsteam attacks, create three red 1/1 human creature tokens on the battlefield tapped and attacking. Exile them at the end of the turn.
When Gearsteam deals combat damage, exile it with five time counters. On each upkeep, remove a time counter. When there is zero time counters on Gearsteam, it enters the battlefield with a +1/+1 counter on it.