(The clue is their unique set badge.) Indeed, like most Universes Beyond cards, they're not legal in Standard, and can only be played in eternal formats and Commander
GW Auras Creatures 4x Alseid of Lifes Bounty 2x Bronzehide Lion 2x Paradise Druid 4x Setessan Champion 2x Siona, Captain of the Pyleas 2x Transcendent Envoy Instants 4x Karametras Blessing Enchantments 4x All That Glitters 4x Season of Growth 4x Sentinels Eyes 2x Sentinels Mark 4x Setessan Training Lands 6x Forest 8x Plains 4x Temple Garden 4x Temple of Plenty The gameplan with GW Auras is to always be aggressive and protect the target of all your auras, while keeping our hand stocked thanks to card advantage engines, Setessan Champion and Season of Growth
It might cost a small fee, but the protection it offers is well worth it if the card never arrives or isn't authentic
This is seen in its Karlov Manor Commander deck reprint
As for the games themselves, Rhys is especially keen on fighting and racing games, as well as soulslikes and RPGs.