Question about TIME BACK rage power

[Elwin]

Ale barrel and telescopic sight is a set of items if you equip both it gives addtional 30% to critical chance of your archers.
As far is i know mage got rage ganing penalty, without rage draiing it raises veeery slowly, so can rarely use, also it depends on playing style tough, so i use rage drain and need rest frew rounds before i can realy use reaper, also i finish figths fast with offensive spells so i got less exp for spirits, and another think might be skill gaining exp for spirits i got only lvl1 of it.