Detention Sphere would be interesting for dealing with walkers and being maindeck artifact/enchantment hate, but 3 mana is a lot for sorcery speed single target removal. I will admit that I haven't really tried it since s25. Flashfreeze would be interesting against rdw but there are better hate cards for rdw, and I don't think it's necessary to tech for glimpse.
I wonder about Flashfreeze and also Detention Sphere somewhere in the 75. Do you rate either of them?
Detention Sphere would be interesting for dealing with walkers and being maindeck artifact/enchantment hate, but 3 mana is a lot for sorcery speed single target removal. I will admit that I haven't really tried it since s25. Flashfreeze would be interesting against rdw but there are better hate cards for rdw, and I don't think it's necessary to tech for glimpse.