What wrong with he Burden of the Father (Savage)?

[Ibi]

Is it VERY hard?

It's not terrible, especially with 15% echo and i220+ equipment, but there are several mechanics that require precise coordination.

There are adds that spawn from the third phase onwards that require some fairly specific management; if even one of them isn't picked up almost immediately, it will likely result in an instant raid wipe.

There are a couple of mechanics in the final phase that not only require specific management, the most common strategy is to take advantage of server ticks and such to effectively allow people to take fatal damage twice within a short window of time. Again, if even one person involved fails to execute it correctly, it will likely result in an instant raid wipe.