Most of the time whenever a One Piece Card Game set releases, there is a shake-up in the meta for the first couple of weeks, but then players get comfortable and return to their favorite decks
Then you distribute that creatures power in +1/+1 counters among creatures you control
The overlap of gameplay, nostalgia, and rarity draws in players, collectors, and non-Magic fans alike, showing how multi-fandom demand can amplify a cards market presence
Those Deadpool copies also stick around after they attack, and you can keep making more Deadpool copies every turn to steal abilities and leave your opponents with creatures that damage them every upkeep
Remember, alongside opening packs, these cards can also be obtained from Wonder Pick, spending Pack Points and trading
Welder gives you insane levels of advantage, and it's amazing that Welder ever got past R&D and into the game.