Enchant creature
Enchanted creature gets +X/+Y, where X is half the number of Forests you control, rounded down, and Y is half the number of Forests you control, rounded up.
Near Mint - $32.50
Near Mint Non-English - $32.50
Lightly Played - $29.20
Lightly Played Non-English - $29.20
Played - $22.70
Played Non-English - $22.70
Heavily Played - $19.50
Heavily Played Non-English - $19.50
Damaged - $16.20
Damaged Non-English - $16.20