Agrith, the Unkillable

Infect
If you didn't pay life to cast Agrith,
the Unkillable, put 2 +1/+1 counters on Agrith,
the Unkillable
At the beginning of each end step, if Agrith, the Unkillable is in your graveyard or in exile,
you lose 1 life and return Agrith, the Unkillable
to the battlefield tapped