If the hardware is hard to manage, hard to monitor, or unreliable in payment and dispensing, refill speed suffers
My favorite of the pair is the Amethyst and Steel, which centers on Jafar, Newly Crowned and his ability to bring back characters with the Illusion keyword from the banished (dead) pile to your hand
Yellow Submarine Ikebukuro, Shinjuku, Akihabara Magic the Gathering, Yu-gi-oh, Pokmon, others (store dependant) Card Selection: Dont worry the only Beatles that youll find in this store will be on the playlist
BT1-003 R Digi-Egg Lv.2 Upamon Color Blue Form In-Training Type Amphibian Card Text 2 [Inherited Effect] [When Attacking][Once Per Turn] If your opponent has a Digimon with no digivolution cards in play, trigger Draw 1 (Draw 1 card from your deck)
Supply is heavy while sealed product is still being opened, which caps how high a card in this tier can climb
In Slay the Spires case, that comes in the form of the relic Violet Lotus. In StS, The Violet Lotus provides energy to the player, which as you might surmise is essentially mana