Dragons have a strong association with the boss monster role in decks and deck themes
And then The Scarab God can exile a bunch of opposing creatures over time, thus providing gentle removal and pushback against the huge graveyard abuse that's common in the kitchen table metagame, all while giving you a powerful 4/4 body
Quick recommendations: what to buy based on your goal If youre a collector Pick what you love first, then optimise
The "Unchained" archetype is often combined with "Yubel", as "Unchained" is a Fiend-centric archetype that can destroy Yubel monsters on the field, while the "Yubel" monsters can access the "Unchained" engine with "Unchained Soul Lord of Yama"
It's a really solid card for sure
Use Espeon to heal your bench while you charge up an extra Espeon ex and your first Sylveon ex, and maybe a regular one