MTG Salvation

What does everyone think of Catalog from Shadows? Fills a slightly similar role to Desperate Ravings, and while it's not base red, costs one more, and doesn't have flashback, you avoid the random discard. Seems ok if you're not a fan of Ravings (although in my own opinion I think Ravings is great).

Could you guys give some insight into this first turn: you're on the play and have a Serum Visions and a Gitaxian Probe. You have no idea what deck the opponent is playing. Do you lead with the Visions in order to get a potentially better draw with the follow-up Probe, or do you lead with the Probe in order to have a more informed scry with the Visions? I fell like this is a really subtle decision, but comes up a lot.