Like the others have said, the idea seems more complex than ideal for a card. We do want all cards to be usable by players within a few minutes of getting to know the game.
However lets examine the structure:
0 cost0 cost cards interfere with the automatic mulligan. Your goal was to allow usage in all decks and minimize the quanta cost of the card since quanta was used to get the sacrifice. Good thinking.In this case a cost of 1
would be less of a burden on the player.
Summons a special other creature that scales in strength.Like dragonsdemesne, I would recommend looking at the shard golem generated from just shards of integrity as an example. Notice that different stages share the same activated ability. You could do something similar where each stage improves upon the last stage by gaining new passive abilities, new status effects, altering/replacing the activated ability OR improving stats.
Start by deciding on 2-4 very similar generic abilities that you can order in strength.
If fractal'd it costs There are significant balance issues for high
costs. Additionally a creature created from a dragon is probably worth much more than 1 nova (12
).
A simple solution would be to have it adopt the element of the sacrifice. However continue to look for better solutions.