As mentioned in our Disney Lorcana first impressions, it's a stellar mix of 'easy-to-learn-hard-to-master' mechanics and thematic fun
Skyshroud Claim is generally the best since it puts lands into play untapped, but the others have advantages depending on your strategy
"Pokmon TCG Pocket Purchase and Premium Pass FAQ"
In the same vein to the formats mentioned above, Quirion Ranger facilitates running lower lands counts and lets us untap Elvish Archdruid for EVEN MORE MANA
Au'ra come in two types: Xaela, a nomadic people who live on the Steppe (basically, they're Mongolian) who have darker, bluish horns and scales, and Raen, who have white scales and horns and are more integrated into Eorzean cultures around the planet
A cost of UUGG is also onerous on a mana base and makes Cryptic Command look really easy to cast by comparison