One shot mechanics in Normal Raids

[Nariel]

Fun fact, Shiva at the end of her 2nd phase in E8 will endlessly spam her room-wide aoe if the party hasn't killed her in time. That's not necessarily an 'enrage' per se, but healers may have a tough time repeatedly doing group heals before the party manages to push phase. Or at least I found that my DF healers instantly died alongside all the dps after 5 bursts of the aoe.... (they were at mostly full health before that 5th aoe)

Its called a soft-enrage, its a race between the team killing it before Healer run out of MP. The softer are just spammed to no end, the harder one get stronger every time until none is left.