I started out with UR Delver and evolved into a more midrange/control archetype from there. Wolfir Silverheart and Restoration Angels were difficult to deal with (and Kessig Wolf Run titans) so I splashed black for some Doom Blades, a Go for the Throat, and a Sever the Bloodline in the Board.
I don't think I much like Slagstorm right now due to the heavier weight on the manabase, and it appears as if most of the format is either a 2 or less toughness or a 4 or more toughness, so 3 damage doesn't kill more or less than Whipflare. Plus there's Bonfire of the Damned to do that job anyway, especially when you can Ponder it up.
I'm looking to stick in one main deck artifact hate (either Crush, for cheapness, or Ancient Grudge, to deal with Metamorph and Spellskite, although those are rarely played cards right now, and I can Doom Blade those still) and a Dissipate. Red Sun is incredibly good right now, since I can use it early game to exile a Strangleroot Geist for 2 mana (a slightly more expensive pillar of flame) and then it can come around late game as a finisher; the same logic goes for Devil's Play. Shocks are actually quite relevant, as having instant light removal against early game Delver or Birds/Elves are epic, versus only having sorcery speed removal + doom blades.
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