Both his rank and his scars were earned in single combat against a cave bear.

Surrak Dragonclaw

Flash
This spell can't be countered.
Creature spells you control can't be countered.
Other creatures you control have trample.

Dominaria United Commander

Khans of Tarkir

Flash
Surrak Dragonclaw can't be countered.
Creature spells you control can't be countered.
Other creatures you control have trample.

Khans of Tarkir Promos

A spell or ability that counters spells can still target a creature spell you control. When that spell or ability resolves, the creature spell won't be countered, but any additional effects of that spell or ability will still happen.