Boreal Centaur

{s}: Boreal Centaur gets +1/+1 until end of turn.
Activate this ability only once each turn. (Snow
can be paid with one mana from a snow permanent.)
Elves of Light hide from and disdain meeting with
men, but share some blood with the Centaurs, who
are willing to talk with each race in turn. Thus,
knowledge is passed and goods traded without
contact.