ELDER of the ABYSS get Rainbows Astracite?????

A couple questions on Urgent Quest Elder of the Abyss.

  1. Do you have to beat Raging Obsidian Arm to run the Elder of the Abyss?

  2. Does Elder of the Abyss drop Iritista Rainbow Astracite? I want the Rainbows so i can get the Elder RIfle for 50 Rainbows in the 2nd floor shop

  1. Yes.
  2. I think so, from what I've seen discussed. Someone who's actually playing can answer better than I.

I’m going to say yes on the drop cuz I jumped for 6 that I got in the CBT to having 20

Pretty sure Elder himself drops that rifle too.