you could use it with lab maniac as your kill....but what does this help dragon do better than read the runes+Oona?
It's because the card serves
both purposes of read the runes and Oona rolled up into one that its interesting. It frees up a slot. I don't know if its better but its by no means janky. Warrants testing.
Lab maniac by itself as a win condition in dragon warrants testing. This card is just bad. If you want to use it as a kill you have to stop the loop. if you have to stop the loop oona or eternal witness is better. if you want to kill with a spell, mental note-->stroke of genius is better. if you want to dump cards into your yard read the runes is better.