Instead of having to draw a specific card dedicated to being a resource and play it each turn, or generating a set amount of resource as per Legend of the Five Rings, the game is a constant back and forth of giving and taking memory, trying to be efficient in your moves and denying your opponent as much memory as possible to use on their turn
When you activate Welder you basically swap the other two between the graveyard and battlefield for at least infinite artifact ETBs and leaves the graveyard triggers
PSA 10 graded copies typically trade 2-4 these ranges, with the Charizard ex SAR PSA 10 and Nanjamo SAR PSA 10 consistently among the most expensive modern JPN graded cards in the hobby
This deck also made use of a Trainer card combination involving Junk Arm from Clash at the Summit [L3] and Pokmon Catcher from White Collection [BW1]
This means you only need one tribute to summon it
Beyond Restocks: Monitoring the Trading Card Market Restock monitoring is the most immediate use case, but automated monitoring supports broader collecting goals