I'd argue that quanta swing is very different from lock-down potential. devourers are already very good at locking down an opponent, these things would destroy non-rainbow quanta production in their current form I think :/
There really isn't much point to giving Stone Form to a creature with more than 5 HP. I'd say to lower the HP to 3 or 4 and lower the quanta knock off amount to 1 and 2. Adrenaline might still be a problem though, 6 quanta knock off per turn is dangerous.
There really isn't much point to giving Stone Form to a creature with more than 5 HP.
I think it is a bad idea to put this in the same element as black hole:This card gets soft-countered by rainbows (more quanta generation),but blackhole counters said rainbows.
Lovely idea, but massively OP. 1 quanta knocked on each form with the upped version being above Thunderbolt range would be ok. MAYBE 1 quanta on unupped and 2 on upped, but 2 and 3 is crazy imo
Devourer|Pest has a net swing of 2 quanta (destroy 1 + gain 1).I don't thing the stat boosts(+4atk, hp from 2 to 6) are balanced against the cost increase (+3). This is before looking at Stone Form or the upgraded card.