Adrenaline: Total attacks = 5 - sqrt(attack), that much I know. With rounding of course. How much each attack is, that I'm still working on.
As for the card itself... I'm not sure what to think of it. The munchkin in me thinks this could be abused by building up a lot of the intended quanta before it gets doubled, spending it all next turn, therefore bypassing the balancing feature of the subsequent halving. And that's just for mono decks. Doubly so for cleverly played Rainbows (though it would take a lot of micro-managing)
The static generation seems like its geared towards

rather than

(though the lunar theme is

, that's for sure). That is,

has existing synergies with

,

, and

(itself, Anubis, and Scarabs)