I got this as a drop in Stormheim off the Stormwing Matriarch – not sure if it’s 100% drop but this was not datamined on Warcraft pets so I thought I’d mention it here! Look how cute he is!!
His abilities are awesome;
Tail Sweep and Frost Breath on the first Tier
Call Lightning and Mana Surge on the Second Tier
Thunderbolt and Arcane Storm on the Third Tier