Golden Disc
I kind of feel like his logic is flawed with his choice to hatch one tier six instead of three tier fives, I understand going for quality over quantity but his dragons seem to only need 2 to 3 days to go from tier 5 to tier 6 where is it'll take a lot longer to upgrade his dragon nest again
I doubt that enemies are lacking, it is a world that basically "hates" him for being from another world apart from the other lords of the castle. In the end there are others enemies.
Reading15:Seems to me that there's only quality when it comes to giant dragons. It's good or better. The sooner he has all 99 types the better. The only possible issue is not having enough enemies to grow all of his dragons with.