UNDOCUMENTED MECHANICS
The minion's actual damage rises 35% above the base attack shown per skill level.
Up to 1 at once.
"Slows Enemies" above follows a diminishing curve, not a flat gain per level; the other numbers in the same block do not: 11% at level 1, 37% at 5, 51% at 10, 63% at 20, 75% at the limit. Reaching the limit takes skill level 60, gear bonuses included, so the first few points are worth far more than the last ones.