Magmatusk is one of the hardest remaining bosses in Mythic+ Season 2 and a new cheese has been discovered which makes the encounter significantly easier.
Magmatusk Cheese – Mythic+ Neltharus
After all the recent nerfs to bosses in Mythic+, Magmatusk remains one of the hardest bosses on Tyrannical weeks. As Magmatusk gains more Magma Tentacle from Volatile Mutation, then duration of Magma Eruption increases until the boss is capped at 5 stacks.