Graded Population Report: Cinderace V #SWSH015 Visualize the distrbution of grades in the chart
From the main sets, the Overlord and Enduring cycles both strike me as versatile cards that will see some amount of play as they provide strong recurring effects
You kill things
You could stock up on extra packs for players to open, or you could build your own custom packs that might fit the theme of your Cube for players to crack
It can be a Goblin token swarm, artifact-based Big Red, heavily Burn, classic Sligh-style midrange control or aggro, Boss-style Red, and more
Some items let you search for cards in your deck, others let you heal your Pokmon, retreat your Pokmon, or disrupt your opponent