Modified by the suggestions, combined by Odin's suggestion to let the unupped other(ish) with serp's to make it's cost less. Not definitely less, only in non-mono.
... Why entropy instead of time or aether though?
Thematically, I wanted it to be a bit chaotic, no clear visions. And in ancient myths and legends insane people (if it was not dangerous for the mayority), had respect in some place, because they believen that their mind was more 'open' to things like this. Similar case, when drugs were used to make visions, trying to predict the future.
Technically, I wanted a but unreliable, but cheap card.
has very direct synergy (Rewind, Eternity and massive draw power) and
mark fits near it very well (as Ghostmare). Same with
with Mindgate and Psyche metal (like, player can't shuffle it's hand, so the drawn cards can be followed). And kinda helps Silencing as well.
Personally, after Dream catcher,
has too much fancy stuff