By “last trash pack” I'll assume you're referring to the patrol with a
대흑마술사 and two
어둠수호병 공허술사s. If this is not the pack in question, you have my sincerest apologies.
All three of the mobs in this pack are annoying and difficult. So the first thing you can do to make this pack more manageable is to break it up. My group, for instance, will routinely root one of the Voidbenders while the patrol is making its way towards us. The other Voidbender and the Shadow-Weaver will continue walking. Tada, you've now got a much more bite-sized encounter.
The Voidbenders' most notable attack is
타락의 공허 which will put a DoT on a player. This DoT will also try to pull nearby party members to the affected player. When the DoT expires it does AoE damage to all nearby players. Trying to run away from the target is usually a waste of time so you either need to just accept your fate and stack up or use a movement ability like Blink to create immediate distance. As a healer, the AoE on expiration is what you really need to be concerned with. Make sure people are topped up before the DoT expires.
The Grand Shadow-Weaver is dangerous because of
암흑 물질. This ability will summon a shard that will begin casting
붕괴. If the shard finishes the uninterruptable cast it will deal an enormous amount of AoE damage. There are two ways to deal with
암흑 물질: 1) everyone stops what they're doing and focuses down the
암흑 물질 as quickly as possible, or 2) everyone runs out of line of sight of the
암흑 물질. Finding spots to LoS in Viceroy's room can be difficult, especially if you haven't cleared out the rest of the trash.
Split the pull up if it's scary. People need to be ready to use defensive cooldowns if they get
타락의 공허 and switch to
암흑 물질 as soon as it appears (or hide from it). After that just pray.