Parasite

[Sabaku]

Name: Parasite
Type: Pernament
Element:   
Cost: 
Effect: It feeds on the opponent's quanta. The more it eats, the more it needs to survive, so every turn a larger quantity of quanta is devoured by it. It starts with 2 random quanta and doubles its apetite every following turn.
What is it really for? Well, that would kind of suck to have this thing feedining on your source of all power, what would eventually lead to being unable to use any card that needs quanta.

 

[Essence]

Change the name; there's already a card called Parasite.

Interesting idea, though.  It should probably die if it can't eat it's fill (like Dissipation Field), and cost less to reflect that.

[Lanidrak]

Yep, interesting idea. I think Darkness should have more quanta denial...

1. Change it's name, Parasite is already a creature card.
2. Definitely make it destroy itself if it cannot remove the quanta it wants.

Then, as a defence against it, your opponent could simply not play any Pillars in order to make it eat 4 Quanta when he only produces 3 each turn. Or alternatively, the opponent could cast a lot of abilities, not necessarily required - in the hope of starving it.

I think it should also gain a secondary ability, considering how Rainbow Decks and most long and epic games involve Quanta in the 100s... Make it heal you for x/2 quanta that it eats? Not sure Nice idea though.

[quick edit:]
Make it not double it's appetite, make it +2 quanta devoured each turn. This way it will not starve itself so quickly. Then, x6 of these in a deck, used tactically can completely deny an opponent's quanta... Even more fun if he relies on Dissipation Field
[/edit]

[Wisemage]

it needs some tweaking, its WAY to powerful, if the enemy has the quanta (say a rainbow deck) in just 3 turns its eating 16 quanta per turn, if you play it a bit late it destroys a decks chances by eating all its quanta, unlike devourers its not balanced.

EDIT: Just read lanidrak's post, that is actually a pretty good way, makes it a bit harder to starve and can be used with some strategy.