Ser Barristan Selmy

Vigilance, Lifelink
Master Swordsman—If Sir Barristan Selmy is
blocked by a single creature, exile that creature
before damage is dealt and gain life equal to that creature's toughness.
"Of these seven, only Ser Barristan Selmy is made of
the true steel."
—Lord Varys to Lord Eddard Stark