Talk:Berserk/@comment-3444820-20190205014811

At level 4, Berserk seems to be -30% to +90%, which would if every number had an equal probabliity of occuring, average +30% extra damage.

As to where it is useful and what it can be used for:

If you have a target that you can only hit with a polymorph, and have more warriors than mages, this lets you get more damage in (as an example, you have two warriors who can each do 500 damage per hit, and they each have ten tokens, but you only have one mage with 10 tokens. Without Berserk, you would get to do 5000 damage (10 x 500), but with Berserk, you would do between 3500 and 9500, with an average near 6500. A gamble, but if your target had 6200 health left, you'd need 13 mage tokens to do it without berserk.

The other use is trying to use up tokens at the end of battle; if you had 10 tokens left and only 5 targets, Berserk would let you use all 10 tokens (so would Focus Attack of course).