Im sure if I looked into Modern targets theres some even more busted options
For dragons, we're looking for ones that fit one or more of the following criteria: 1) cheap 2) have haste 3) force attacks 4) provide powerful utility
After all, the more colors your commander has, the greater are your options when putting together your deck
Dualcaster Mage further benefits from a whole host of spells such as Twinflame, Ghostly Flicker, and Molten Duplication that can allow it to create infinite mana, infinite ETBs, or infinite copies of itself with haste in order to win the game
This pairing is scarcely seen on ladder but sports a win rate that suggests it may be better than it's low meta share would indicate
None seem particularly Modern playable, save one, but there are a few good Commander cuts in the bunch