Thanks for the advice, Olly and Fez.
We'll hopefully be attempting Mother again tonight. We usually run with 3 hunters, so we'll make sure to drop lots of snake traps (probably tool around with staggering them or dropping them all at once). Hopefully we'll have all three of our usual shamans on as well.
I've also decided to highly recommend at least some SR gear for all our high DPS and healers, and I intend to pass out some Major Protection pots as well. Fingers crossed

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