Grubfather

When Grubfather enters the battlefield, add
{g}{g} to your mana pool for each Rescued Grub
in your graveyard.
Exile a Rescued Grub from your graveyard: Put
two +1/+1 counters on Grubfather.
It is unknown whether this is a cruel act on the Grubfather's part or just a part of Grub biology.