Both Jester's Cap and Mask were sought-after cards, although good players quickly learned that the Mask was actually pretty terrible
2021-03-19 If a creature you control has a mana ability with in the cost, activating that ability while casting a spell with convoke will result in the creature being tapped before you pay the spell's costs
A dedicated UR build can load the graveyard very easily with self-mill and looting effects, so I could even see Eris hitting play around the same time as Stella despite the huge gap in mana cost
This works especially well with "Donpa, Marksman Fur Hire" or "Recon, Scout Fur Hire" on the field, since they can trigger in response to the Link Summon of "Folgo", or his effect to summon a monster "Fur Hire" from Deck
And there's always one or two fake cards, like, hidden amongst them, which people just have no idea they have