Return to Ravnica also came out during a time of unprecedented player growth in Magic (I myself picked up Magic the summer before the sets release), and a massive cohort of Magic players is eager to dig up their Standard cards from years past
If you run into any sweepers, you can reanimate all your Enchantments from your graveyard with cards like Replenish, Brilliant Restoration, Open the Vaults, and Redress Fate
In addition to the ease of reusing and abusing this effect with reanimation cards like Sun Titan, being a creature makes Oreskos Explorer a great source of early damage or a deterrent for those trying to inflict early damage on you
This may be relevant with cards like Jace, Vryn's Prodigy
With a combination of insanely high HP, powerful damage spread capabilities (made worse via Munkidoris powerful Adrena-Brain ability) and backed by a plethora of handy basic Pokemon, Dragapult ex is just one tough deck to beat