The main purpose I could see for this commander is in a Krark deck, but in that case, itd be an inclusion, not the commander
Nylea's Colossus Nylea's Colossus primarily works in EDH, where its power-doubling ability gives decks the strength to punch through 120 lifeor Voltron decks to hit the 21 commander damage threshold
I think there may have been a great non-Chord of Calling Collected Company deck, but see my above discussion about that basically being a different deck
Chris takes a look at the Party Time Commander Precon deck, and has some suggestions for how to give it a bit of an upgrade
On several Stellar Sights cards, most notably Echoing Deeps, parts of the cards rules text were obscured by added visual flourishes
In Commander, this often translates to a strategy of buffing your Fighter with aura and equipment cards to make them unstoppably strong