(8/23/2019) Ignite the Future doesn't change when you can play the exiled cards
Since losing life isnt all that uncommon, Rowan, Scion of War can frequently discount your spells by at least a few mana
Second, apart from tribal Cats (which may or may not be possible, due to the lack of cards), the only other direction to go is equipment matters, which tends to be an expensive upgrade, since you'll want various Swords, Batterskull, and Stoneforge Mystic and friends
Herald of Eternal Dawn Who would guess that giving flash to Platinum Angel would make it so much better
This Esper sphinx is more of a political commander but it's truly excellent in that role, to the point that it's strong enough to see play in cEDH, and is overall one of the most popular commanders in MTG