Both unupped and upped have to be the same type (creature, permanent, spell)
Well, they don't have to, but there is not a single card that isn't, currently.
Breaking the habit, but not now. Not with this card. But if the 3 turn is denied, its don't have to be a perma.
*criticize
Thank you! 
Okay, I often play fire-decks so I thought the permanent-trait would be more of a disadvantage, but I think you're right!
I personally don't like the idea of a double-sided card.
What do you think about making both cards a spell for the next turn and just making the upped version cheaper? 5/3?
Compared to other reductions (Black hole, EQ, Pest) it's a bit huge price. So if we can reduce the cost and make some disadvantage (as like let Mark to generate quanta) it's can be more useful (reduced prices let this card to use in Rainbow, easily in a trio/duo and gives it more chance to find a good combo).
Compare it to EQ|Pest. This negated 1-9 quanta for 1 turn ( and let 1 delayed turn to use the source what you've got from the prev. turns). EQ destroys up to 3 (in the 90% of the cases, this is all or 3 pillar, what you can have). But you never can get this quanta from these pillars, so destroying 1 quanta is cost less than 0.33 quanta (in 3 turns). Pest can 'steal' quanta, so devouring for 3 turns cost (less than) 0 quanta. So why does it costs that much? I feel that making the cost to 4|3 will be good at raw(as like Black hole, which does the same against a Rainbow or in the early game, just 1 turn earlier). Comparing to Silence, it'll be the same price, because it's the same, but it's a bit better, (Immolation help, against stalls...) so there will be needed a +1 for that part (Silence is 3|2, so it'll be 4|3 too).
