Squirrel Infestation

4 Squirrel Nest
4 Chatter of the Squirrel
4 Squirrel Mob
4 Squirrel Wrangler
4 Krosan Beast
4 Nut Collector
4 Deranged Hermit
4 Overrun
28 Forest

Card-by-Card Analysis

Squirrel Nest, Chatter of the Squirrel - read **SQUIRREL** infestation.
Squirrel Mob - gets +1/+1 for each other Squirrel in play, enough said.
Squirrel Wrangler - squirrel factory at the same time contributing to
threshold (look at the next 2 cards)
Krosan Beast - gets all squirrel bonus and with threshold, a 8/8 for 3.
Nut Collector - squirrel factory, with threshold, squirrel fitness centre
Deranged Hermit - squirrel factory & squirrel fitness centre
Overrun - would have used Might of Oaks (not the one from 7th Ed, choose the
one from urza's legacy), but Overrun is obviously better turning all your
tokens into 4/4 tramplers (could be higher with all the fitness centres).