Quote Originally Posted by extrapayah:1761391

yes, but you might also want to spend it to armor instead, since devs make the skills unchangeable when it's on cooldown, so it's not so recommended having more than 4 skills (i used 6 before, and decided to stick to 5 since the update on cooldown)
Uhh no. You are not supposed to change skills in the middle of the battle. Change time shift to lightning/heal to shield right before the boss if you have 5/6 skills.
And as for passives put in str dex int and crit not armour nor dmg.