It is a pretty tasty turn one play but gets worse at a quicker rate than most hand disruption cards
gem dragons in general had been absent from D&D since the game's third edition, and now they're storming back onto the scene with a chapter in Fizban's Treasury and their very own WizKids miniatures (which you can pick up for a reduced $58.63 at Amazon, as it so happens)
Black creatures are overall tricky to defend
The Cycle of Enduring Glimmers Im grouping these in the same category because theyre all enchantment creatures with strong effects while theyre on the battlefield, and if they die, they return as enchantments
Dragonologist Dragonologist does a little bit of everything you want early on: It digs for dragons, instants, or sorceries when it enters, and then once you start dropping your dragons, it gives them hexproof as long as they stay untapped
Make sure Ashling returns last to reattach the Scythe, and do it all again next turn