Caliban, the Heir Betwixt

At the beginning of your up keep, if Caliban is in
the command zone or on the battlefield and you do not control other Sentients, create three 2/2 colourless Sentient creature tokens with flying.

During your combat phase, if all Sentients you control dealt combat damage, at the beginning of
your second main phase, deal total combat damage dealt to target player or planeswalker.