Multiattack. The giant makes two attacks, using Frost Axe or Great Bow in any combination.
Frost Axe. Melee Attack Roll: +9, reach 10 ft. Hit: 19 (2d12 + 6) Slashing damage plus 9 (2d8) Cold damage.
Great Bow. Ranged Attack Roll: +9, range 150/600 ft. Hit: 17 (2d10 + 6) Piercing damage plus 7 (2d6) Cold damage, and the target's Speed decreases by 10 feet until the end of its next turn.
War Cry (Recharge 5–6). The giant or one creature of its choice that can see or hear it gains 16 (2d10 + 5) Temporary Hit Points and has Advantage on attack rolls until the start of the giant's next turn.