Peri Brown might help him out, or work well in a go-wide strategy, as she gives one Historic spell a turn Convoke
The list played by Ruin000 to a positive record at a recent Magic Online Challenge exemplifies this new direction
Prince Imrahil the Fair Prince Imrahil the Fair is a low-cost commander which makes it easier to get it out early and consistently recast it
Hedron Detonator is another Reckless Fireweaver variant that can turn artifact loops into wins, and Pain Distributor punishes excessive Treasure use by your opponents, which is weird considering Sardian Avenger was printed not that long ago
Red's damage in this area most often hits all creatures, including its own
In fact, I would tend to prefer a 3-mana Walker that does this with a +1 over a 5-mana Walker that just draws a card and mills one (Jace, Memory Adept)