its a movement-fight.
you have move continiously during elemental phase. and, if it s necessary, use AoW procs for healing.
check boss debuff on your party: sometimes elemental-form boss puts a 30 sec countdown debuff.
it s a long debuff.
during transition phase, aka golem phase, heal your party till debuff is ended. then finish golem.
i use golem phase to heal max the party, then kill golem.
play elemental-phase like Krick and Ick, PoS boss: move move move. it helps keep grp alive.
check floor: pink is bad