Interestingly, this could probably also be or .

Flying is more blue than black. Same for looting and toughness greater than power. What's black about this?

I'm not sure that reasoning applies; you could say the same about Lurking Informant, but that could be cast in monoblack, unlike this. This is probably fractionally better than blue can get on its own (cf Vodalian Merchant), so adding a second colour gets to drive the cost down a bit (cf Watchwolf).

I know I made this, but I can't help but feel like it's not really . I feel like we should either make it mill a player, or have it be "...draw a card, then each player discards a card." Or is that way too effective for common?

We could have it be a flying Ravenous Rats if you want. A Ravenous Rats that also loots yourself? It's clever... but I think it's a bit too much for common.

I agree this isn't quite right at the moment. Looting has pretty much moved to primary in red; blue can still have it, but generally only if it's somehow sharing it with red (e.g. Desperate Ravings).

Hm. I assumed looting was primary in U and R, but they were just pushing red heavily to make the point that it was in red too. But you're right, there's almost no mono U looting cards recently.

But either way, looting makes more sense in UR which both do looting, than UB.

Maybe Psychomancer should move to uncommon and this could become the common creature?

That seems plausible to me.

Re Link's suggestion of mill, note that the other common does that, Deny Knowledge. So I don't think we need to pigeonhole quite so consistently.

Since repeatable creature pinging has been moved to uncommon (at least for -style pinging), I agree that Psychomancer should move to uncommon and this could be the creature. I would then suggest that we have a Enlighten creature in this place.