Keeper of the Camp

Haste
When Keeper enters the battlefield, up to 3 target creatures you control join the pack. Keeper gets +1/+1 for each creature in the pack.
Whenever Keeper attacks, reveal the top X cards of your library where X is the amount of creatures in the pack. Put all creatures sharing a creature type with at least one creature from the pack and with CMC X or less onto the battlefield and into the pack. Put the rest in your graveyard.
{6}{g}: Target creature you control gains a pack counter. This abili