Raider of the Bitter Peaks

Flying, First Strike, Skulk
When this creature enters the battlefield, all
creatures get +X/+Y where X is 2 times the
number of Plains in you exile and graveyard
and where Y is 2 times the number of Forests
in your exile and graveyard.
All creatures you control gain Vigilance and
gain +0/+2 if they are not transformed.