My own personal choice would be Sorin, Lord of Innistrad since I like the idea of slowly building up a relatively minor but untouchable bonus over the course of a game (unlike the experience counter generals who are all mostly pretty fast and scary other than Kalemne). Gideon, Ally of Zendikar is a close second for the same reason, but white-black is preferable for colors.
Unscythe would also be a neat one, though. I think it's the equipment with the most different colors in it even without being legendary.
I would run Chromanticore. It just looks like such a fun card for a commander. Bestow for versatility and board wipe protection plus a boat load of keywords and all five colors for all the goodstuffs.
I can see Hammer for a rock-heavy, LD deck.
Spear tokens
Whip reanimator
Bow trample fatties
Now Bident is what I'd pick. Always liked Coastal Piracy. Not sure how you break the second ability, but it keeps people on their toes. The deck probably would be Edric lite.
- Rabid Wombat
Elbrus, the Binding Blade. I know that one comes up a lot as something people house-rule as a legal commander.
- Rabid Wombat
Dragons of Legend, Lead by Scion of the UR-Dragon
The Gitrog Monster
Gonti, Lord of Luxury
Shogun Saskia
Hive World
Atraxa hates fun
Abzan
(U/B)(U/B)(U/B) JUMP IN THE LINE, ROCK YOUR BODY IN TIME
(R/W)(R/W)(R/W) RISING FROM THE NEON GLOOM, SHINING LIKE A CRAZY MOON
(U/R)(R/G)(G/U) STEALIN' WHEN I SHOULD HAVE BEEN BUYIN'
Unscythe would also be a neat one, though. I think it's the equipment with the most different colors in it even without being legendary.
- Rabid Wombat
Seriously, need this 'exactly' on a commander.
Legendary Creature VO will limit you to one spell a turn or something restrictive.
(U/B)(U/B)(U/B) JUMP IN THE LINE, ROCK YOUR BODY IN TIME
(R/W)(R/W)(R/W) RISING FROM THE NEON GLOOM, SHINING LIKE A CRAZY MOON
(U/R)(R/G)(G/U) STEALIN' WHEN I SHOULD HAVE BEEN BUYIN'
Academy Ruins / Mindslaver?
Aetherworks Marvel, so I can finally make an energy deck? Though it would be colorless...
Gonti's Aether Heart is another options.
Eye of Ugin!
Pyromancer's Goggles could be fun.
8.RG Green Devotion Ramp/Combo 9.UR Draw Triggers 10.WUR Group stalling 11.WUR Voltron Spellslinger 12.WB Sacrificial Shenanigans
13.BR Creatureless Panharmonicon 14.BR Pingers and Eldrazi 15.URG Untapped Cascading
16.Reyhan, last of the Abzan's WUBG +1/+1 Counter Craziness 17.WUBRG Dragons aka Why did I make this?
Building: The Gitrog Monster lands, Glissa the Traitor stax, Muldrotha, the Gravetide Planeswalker Combo, Kydele, Chosen of Kruphix + Sidar Kondo of Jamuraa Clues, and Tribal Scarecrow Planeswalkers
I totally agree, we need an energy commander.
What about the god-weapons? I mentioned Whip in the first post, but I have to say I would really like Bow of Nylea just for how versatile it is.
- Rabid Wombat
Spear tokens
Whip reanimator
Bow trample fatties
Now Bident is what I'd pick. Always liked Coastal Piracy. Not sure how you break the second ability, but it keeps people on their toes. The deck probably would be Edric lite.
(U/B)(U/B)(U/B) JUMP IN THE LINE, ROCK YOUR BODY IN TIME
(R/W)(R/W)(R/W) RISING FROM THE NEON GLOOM, SHINING LIKE A CRAZY MOON
(U/R)(R/G)(G/U) STEALIN' WHEN I SHOULD HAVE BEEN BUYIN'
Draft my Mono-Blue Cube!
lichess.org | chess.com
If I had to choose one to actually build a deck around, I would probably choose Jace, the Mindsculptor (now that Planeswalkers are now legendary)
Planeswalkers, counters and all sorts of nonsense.
helix pinnacle might be a close second
EDIT: Didn't see the legendary clause.
For legends, probably something like aetherworks marvel
BGGRock
Modern
BRGJund
BBGRock