if you read the descirption you would understand. sometimes you have to use spells on your self even though they damage and you can attack allies to gain something yourself
First, i don't see the geth in those things. and second, the baron isnt supposed to be killed with normal attacks, but wit focus destroying attacks so he uses deep burning to regenerate focus but lose health DRASTICALLY
1. go to inventory
2. click an item
3. with the item clicked, click options
4. click anywhere in the red area
5. go to inventory and see that your stats have increased without having the item equipped
do this all the time and you can deal 999999 damage in 1 hit