The decks will have various characters and items from different franchises, though they will be preselected cards, not random like the cards found in booster packs
If the inkcaster belonged to them (their name is on the bottom, they may have been an Illumineer
(Equipment, Auras you control, and counters are modifications.) Cosmo Memory - When Red XIII enters, return target Aura or Equipment card from your graveyard to your hand
You will lose some of the time to your own Excruciator this way, but you win much more often than not, which is what actually matters
You and your glimmers will face other Illumineers and their teams in an exciting race to collect lore
More importantly, it can double as a very useful way to cycle cards off the table and back into your hand - something that can lead to powerful combos with cards that trigger their own effects when played, allowing you to use their effects again and again