No point in stating which tanks are assigned without saying why.
DKs are preferred MTs in the
3-drake strategy because their active mitigation abilities can reduce the damage of Sartharion's Flame Breath. With the combined +100% Fire Damage intake debuff and -25% total health debuff, these breaths can hit harder than any tanks healthpool, making cooldown use mandatory. DKs aren't entirely necessary because Pallies/Druids/Warriors can get by with Raid cooldown rotations of Hands of Sacrifice, Divine Guardian, Guardian Spirit, Pain Supression, etc, but DKs can somewhat manage it on their own, provided they rotate their cooldowns properly.
However, in a
2-drake strategy, its possible to work around getting both +100% fire damage intake and -25% total health, so this point is pretty moot.
In regards to add pickup, Warriors/DKs are the best in this particular fight. DKs targetted Death and Decay is useful for picking up adds at range, while the bursty nature of Thunderclap and Shockwave gives Warriors an edge. Warrior's Vigilance on either the MT or any of the other OTs makes sure their off GCD Taunt is always available. Pallies are at someone of a disadvantage threat-wise because of a lack of bursty AoE threat abilities. Avengers Shield is capped at 3 targets and has a long cooldown and Consecration requires a few ticks and melee range in order to pull threat off AoEing dps/Healers.
Either way, its probably best to have 2 tanks on add pickup, because 100% fire damage intake coupled with fire elemental damage will make quick work of any healer, and Whelp hits stack an armor reduction debuff. QUICK pickups and handling of adds is important.
Drake tanks have no preference. Whoever can build threat fast and sustain it (as they will need to be burned down quickly), while maintaining mobility to avoid red circles and waves, while keeping the raid safe from frontal breaths, can handle it.
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