Alright here's some fun numbers. With all the right gear for prebuffing (+3 summon amu, circlet, AoKL, +4/+3 Splendor head, Marrows, +1 rings, Enigma), much of which I already have and about 4 summoning skillers I'm getting skellies at about 682-686.

Let's add a lvl 20 Might merc aura, a lvl 18 concentrate aura, and a conservative lvl 13 Faith bow Fanat aura. Adding those up, I'm showing a +799% boost to damage. So that's looking like 6,131-6167 points of damage per skellie. Switching back to the faith bow leaves me with a mere 14 skeletons. that's 14 X's ~6,149 points of damage at fanats +32% IAS for the skellies. That's BEFORE amp damage. With amp damage one could assume we'll be doing from 50% to 100% more damage reaching well over 12,000 points per hit per skellie against opponents that have no physical damage absorb and perhaps a mere 1,000ish against tough physical immunes.

Now, imagine if I had a perfect Faith bow and a merc with +5 to his might skill via one of the +2 armors and a +3 offensive auras circlet for another 50% damage from might. Imagine if I had ten skillers instead of only 4.