yugioh banish extra deck Gizmek Orochi, the Serpentron Sky Slasher – Yu-Gi-Oh! Master Duel – Untapped.gg What extra deck cards to

This is either from collectors due to their value or players for their meta relevance

There are at least some sweet cards for Brawl enthusiasts, though

This XY: BREAKthrough - 3-Pack Blister (Sableye) contains

Their key Extra Deck monster however is "Swordsoul Grandmaster - Chixiao", an Extra Deck searcher able to search or banish any "Swordsoul" card from the Deck when summoned (who also has its own negation disruption effect), which enables further extension by searching for more "Swordsoul" starters or banishing a Trap to make a "Swordsoul Token", or to further strengthen the end board by searching a "Blackout" or "Emergence" (for it to search a generic Wyrm boss monster, like "Archnemeses Protos")