Okay, here's my thoughts:
- It's a quantum generator. I'd suggest giving it a relatively low cost in that case, or maybe a cost of
so that it can have increased use in different decks.
- The way I currently understand the effect, it heals you up to five - which makes duplicates relatively useless unless you need more quantum. However it does help somewhat in keeping the cost low.
Suggestions:
Make the healing stack, but cap the max healing at 30 HP. Reduce healing back to 5 for upped.
Make cost 4
| 3
, or 3
| 2
.