PSA: Use Welt against the new MoC Boss!!!
TLDR; Welt Sustain is back - his ult can permanently keep the new MoC enemies on the friendly channel such that they'll never attack you!
If you haven't already tried it, the latest MoC has the new boss from the 2.6 story quest, a group of 5 enemies with high toughness bars and shared HP.
This boss can be really hard to deal with if you don't have the right characters. Each enemy has two channels it changes between, Off-Class Channel (good) and Classroom Channel (bad), and this determines if their action is friendly or not.
These channels have a chance to swap when enemies are hit, but there's a catch - when recovering from weakness break, the enemies' first action is guaranteed to be friendly!
Given the AOE nature and benefits for weakness breaking, it's clear that this boss is really good for Rappa teams (and some break teams). However, without a lot of toughness damage or break efficiency, it can be hard to break the enemies fast enough to stay alive.
But what if you didn't need to deplete the toughness bar to apply weakness break?
Welt's ultimate not only delays the actions of all enemies, but it also imprisons them without the need to deplete their toughness bars. This imprisonment works the same as normal imprisonment, meaning when enemies recover from it, they are guaranteed to be on the friendly channel!
e0s1 acheron clearing without a healer ?!
In this video, I was able to complete the entire fight without getting attacked a single time - with the F2P Tutorial LC, Welt was able to get his ult fast enough to refresh imprisonment before the enemies could take action.
Other things to consider:
- In Phase 2, there's an event in the action order that will advance the enemy team's action forward and put all of them on the bad channel. While you can delay it with weakness break, it will come eventually - if you can't kill the boss before then, consider still running a healer.
- If you don't have E2 Welt (which gives a lot of energy), you should probably have an ERR rope, ERR planar set, and the Tutorial LC in order to get his ult fast enough - this is especially important if you run no sustain, as you'll need to get his ult quickly in the first wave to survive
- Acheron without her LC will probably struggle to survive the first wave without a sustain, but you can definitely replace one of the two nihility in her normal teams with Welt here instead!
- Superbreak teams could replace their sustain with Welt instead of replacing Ruan Mei and Harmony MC, since some of the enemies don't have a fire weakness - having no sustain is less of an issue here than with Acheron teams, since breaking and Ruan Mei are pretty good at stopping enemies already!