Damage Resistances Cold

Damage Immunities Lightning, Thunder

Amphibious. The giant can breathe air and water.

Lightning Strike (Recharge 5–6). The giant hurls a magical lightning bolt at a point it can see within 500 feet of it. Each creature within 10 feet of that point must make a DC 17 Dexterity saving throw, taking 54 (12d8) lightning damage on a failed save, or half as much damage on a successful one.

Spellcasting. The giant casts one of the following spells, requiring no material spell components and using Charisma as the spellcasting ability (spell save DC 17):

At will: detect magic, levitate, light

1/day each: control weather (cast as 1 action), water breathing