Dojo

You may choose not to untap Dojo during your untap step.
At the beginning of your upkeep if Dojo is tapped, put a tutor counter on it.
{2}, {t}: Exile target creature you control.
When Dojo becomes untapped, you may pay {2} and remove all tutor counter from it. If you do, return a creature card exiled with Dojo to play with a +1/+1 counter on it for each tutor counter removed this way.