Flavour: Green dreams are blue.

Anyhow, Braingeyser + Scry? I hate to say it, but mythic is probably allowed better than braingeyser at no extra cost.

You think so? I don't know. The creatures in Mythic have all been under-undercosted, but the instants and sorceries are a bit harder to figure out. Most of them are so over the top, it almost doesn't matter what casting cost they put on them.

That said, this card does seems close, power level wise, to Sphinx's Revelation (though, gain X life is probably not as good as Scry X cards.) Since Sphinx's Revelation was a tier one card, I would assume that is the minimum we could pay for this effect.

Mm, at mythic I'd say X2UU or XXU. For X=2 this is less good than Foresee, after all.