Strength

Strength increases attack power.

Effect
Increases melee damage by × level. Negative levels decrease melee damage, with attacks being ignored entirely if damage would be 0 or lower.

Causes
(It may be worth including a section here later on about how high a Atrength leave combined with Sharpness is required to one-hit a mob, analogously to tie Haste page. Just an idea.)

Immune mobs
Technically, mobs which cannot attack are unaffected by strength.