That's not what is supposed to happen though.

As you can see from this screencap, the Chain Max Targets is 4 for an un-upgraded Shock Therapy.

Click on the Green Upgrade button for 150 Mana and we see an increase of 400%...

Clicking on the "i" again we see the new Chain Max is "20" but I have not seen this to take effect!

Other people have, but I have not... will test and see if I can get an update on this for the people :P

Cheers 🍻,

• CaptainDingus