Avoid caps out at 95% chance and there are also rooms or effects that allow enemies to reduce or ignore its effects.

I had Avoid +40% +40% + 20% and used a skill that make damage + increases Avoid by 1 turn, but still I was suddenly killed

Frenzy is very viable, especially if you pair it up with Willpower (makes you immune to confusion). You will still get the double damage and Max HP effects, but without the confusion effect, so it pretty much eliminates the risk of dying from some BS petrify mobs or delayed damage skills. I use them both on my main Lab Part Preset for my Warrior. Both of them are common 2 star rarity lab parts so they are fairly low cost.

i like frenzy. frenzy is cool and strong guy undefeated by battlebournes.

frenzy class love in the old country

I've been running this build for a while. With Promotion part I can make Frenzy permanent then I can switch to other gears.

All fun and games until you meet petrification buildup.

Literally this is all you need, i even upgraded my dragoon with frenzy so its always active and get constant good runs since all im doing is picking the room. If you get ninjitsu with its its even better, and is a guaranteed high floor run until you get 1 shot by something bs.

Frenzy is great. It helps you win right up until the point where it helps you lose!