O. Ring: I just cut my last O.Ring on the MID update. I think my White removal is plentiful enough and versatile enough that this is no longer needed at my size.
Lightning Strike: If it can hit any target, it gets in. The ones that can't go face, I'm not interested in (besides Abrade, which is an all-star). I will happily play more of these if they're printed.
Doom Blade: I know a lot of people have become low on these, but I still like them. 2-mana-instant-speed-kill-most-creatures is good enough. I run 2.
Path to Exile: Path and StP are fantastic. Something with a targeting restriction like Condemn is not. But Path is great.
Languish/Earthquake: Never ran any of these at 360. Can't imagine I would in the future.
Disenchant: I still have good-old-fashioned Disenchant in my cube. There's a lot of must-answer Enchantments and powerful Artifacts. Disenchant is one of the few ways to get out of an Opposition lock in my cube, for example.
Disenchant a moxen feels like a losing proposition.
Sometimes. But if the Opponent goes Turn 1 land+mox, Turn 2 miss a land drop, I'm definitely going to Stone Rain them.