Ill largely ignore the mana rocks in the section
This means that you could name elder instead of dragon on cards like Cavern of Souls and still have effect work as intended
Of course, it also has pack tactics, which reads, Whenever Minion of the Mighty attacks, if you attacked with creatures with total power 6 or greater this combat, you may put a Dragon creature card from your hand onto the battlefield tapped and attacking. Nobody likes a surprise Dragon except the player taking advantage of it
The latter are interested in cheap bodies that do a thing for sacrifice purposes and flicker decks are all about getting good ETBs over and over to outgrind opponents
If you control ten permanents but don't control a permanent or resolving spell with ascend, you don't get the city's blessing
Other Potential Cards There are lots of other cards that work well with Isshin that I would have liked to get into the deck