I’ve been stuck on this mission for the past week. I keep evolving and adjusting my team and still can’t seem to win. Any advice on how to build my team would be great. I have a max cost right now of 113. Darn poison team is wrecking me.
If you are stuck on Invasion of Otholon, I would suggest viewing these wonderful videos by forum member Wahab! 
https://www.youtube.com/playlist?list=PL2P-aE66dKWTqbb7fTA3QOPd2IA2CTs8q
My suggestion would be to start with the starting 4 monsters e.g. Wolfrozen, Rexokong, etc. Then follow up with Snowja or another Timestriker. Alternatively, you could start out with 2 revenge stunners, Demolitron/Spinoarex, and Snowja with Clio following behind so you can cover going against Sleep and or Protector. Also, if you haven’t done so, try posting in the Rate my Team thread you’ll receive help as well. However, it may take anywhere from 1 hour to 1 day to get a response. Hope this helps!
Thanks for the feedback! I find revenge stunning doesn’t work on this mission though, making the starters less useful because if they get killed via poison is doesn’t activate.