Completed that task last night. Just a heads up, the previous beast task requires the 3 beasts to be alive at the end, they don’t need to be for the Ivus one. Got the reward with just mukla surviving. You might have too many beasts trying to get that synergy going. I only had blink fox/Krush/king mukla as my beasts, then malfurion/brukan/goff as the rest which gives some nature synergy with the beasts.

The previous task krush+anacondra was practically a cheat code. Get the treasure that has beasts immediately destroy summoned units. lokhalar deals 15 damage, summons the totems, they get destroyed, he takes 50 damage, heal with anacondra and repeat until it’s dead