Treefolk Emissary

Treefolk Emissary cost {g} less to cast for each
Elf and Treefolk you control.
Trample, Reach
Treefolk Emissarys power and toughness are each equal to the number of Forests you control plus
the number of Elves and Treefolk you control.
{g}{g}{g}{g}: Regenerate Treefolk Emissary.