@wfain yeah, pyroblast seems great but I'm really not sure about the red splash. Tried a 4c without black yesterday with thalia, the very old version with grudges and felt kinda bad. I tried something along the bant version that was around, with the amount of relevant permanents deputy seems pretty good and Lavinia has always been. So far played only 1 match with it but seemed better. Got to fight the otherwise almost unbeatable sphynx and Lavinia is kind of a must counter against blue decks.
Fastbond is pretty serious, got beat up badly yesterday against IAmActuallyLvl1 with a amulet titan with infinite mana turn 2 (t1 amulet into t2 bounceland and fastbond). The deck seems pretty good and it's probably not even close to ideal.
1 chalice and 1 misstep sound good to have too.