Quote I like Finkel wayy better than Ophidian. Sure he's 1 more color mana to pull, but you also deal the damage to the opponent(which can make a huge difference). I've played(and still do) Forbiddian, and I really like Finkel better. Around 4 months ago, a made a b/u/g control deck using them, and piloted it to a 3rd place finish in a local 1.5 tourny.
I don't know much about 1.5, but I assure you that in T1, Ophidian is the way to go. I don't mean to say that it doesn't work, but Ophidian is much easier to resolve. In T1, Shadowmage Infiltrator is hardly a viable win condition, so the 1 point of damage it deals is hardly an asset.