Racheal, Meticulous Tutor

For each {g}{g} spent to cast Racheal, Meticulous
Tutor, create X 2/2 green cat creature tokens.
At the beginning of your upkeep, you may exile
Racheal, or, if exiled this way you may add a
bargain counter to Racheal. If you don't, return
Racheal to the battlefield with an artifact from
your sideboard with mana value less than or
equal to the bargain counters attached to Racheal
and then remove all attached bargain counters.