Squirrel's Lair

Whenever a Squirrel enters or leaves the battlefield, put a Acorn token on Squirrel's Lair.
Remove two Acorn tokens from Squirrel's Lair:
Create a Food token or a Clue token.
Remove five Acorn tokens from Squirrel's Lair:
Put four +1/+1 counters on target Squirrel.
Some squirrels trade nuts to acquire those best suited
for their needs, which generally involve eating.