[You spent 1+2+30 Evolution Points. Remaining: 171.] [Strength Training (Jade Tier → Diamond Tier → Epic Tier → Legendary Tier): passively increases Strength by 48 → 72 → 96 → 144. Level requirement: 18.] [Legendary Tier addition: your total Strength increases by 10%.]
Previously, Qin Feng had learned Agility Training and evolved it to Legendary Tier, gaining 126 Agility.
That was because that Agility Training Skill Book had only been level 14.
This Strength Training Skill Book, however, was level 18, so its values were somewhat higher.
Still, the percentage increase to his total attribute added at Legendary Tier remained 10%.
Qin Feng paid it no mind.
He looked at the other Skill Book.
It was a poor-quality Skill Book dropped by a centipede mob-Back Attack Enhancement!
I can raise its level now.
Qin Feng learned it directly.
The skill's effects were overwritten!
[Back Attack Enhancement (Legendary Tier). Level requirement: 1 → 17. When attacking a target from behind, damage increases by 100% → 180%.] [Legendary Tier special effect: while invisible, all your damage counts as back attacks!]
One word: powerful!
The poor-quality Back Attack Enhancement Skill Book Qin Feng had obtained increased back attack damage by 18%.
But because Qin Feng had already evolved Back Attack Enhancement to Legendary Tier, that value was multiplied tenfold!
From twice the back attack damage before to 2.8 times now...
Even Qin Feng was a little astonished.
The key was that as long as he was invisible, all his damage counted as back attacks.
Combined with the effect that prevented attacks from breaking stealth...
Every strike was a back attack, every strike lethal!
Furthermore, the reason Qin Feng had told Wang Meng's side to wait a few hours was so he could grind in the Skull