Pick any Planeswalker to be your commander if you like
Even without stacking a ton of spells, being able to tutor one dragon straight onto the battlefield is powerful but when you storm off, you could end up putting three, four, or even five dragons into play all at once
Their signature Blaster attack often has the ability to paralyze or stun your characters in some way, so a tapper is a good choice for its design
9 Junji, The Midnight Sky Junji, the Midnight Sky keeps popping up in Standard, and for good reason
Against aggro decks a turn four Damnation used to be a sufficient blow that you could happily waste your whole turn two or three to go and Tutor one up
Legendary permanents you control have Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) Chaos: Whenever you roll Chaos, put a Legendary red and green 5/5 Human Warrior creature token with First Strike and Trample named King Agnos onto the battlefield