[Flamestrike]ωϖ—Calls down a pillar of flame, burning all enemies in a selected area and inflicting additional damage every 2 sec. for 8 sec.
[Frost Armor]ωϖ—Encases the caster in a layer of frost that lasts 30 min. The thick ice increases armor, slows melee attackers' movement, and increases the time between their attacks.
Kill Evokers first. The Frost Armor will slow your tank's attacks down as long as they're up and the Quick Flame Ward will proceed to annoy fire mages and warlocks. Flamestrike should simply be healed through.