64 x 89 card sleeves Inner (BCW) The price of a pack of inner sleeves in negligible against the price of replacing expensive cards. Card Sleeves - Standard 64x89mm

Cards like "Harpie Channeler", "Elegant Egotist", Summoner Monk", and "Hysteric Party" allow the Deck to Summon multiple Harpies quickly and Summon multiple monsters from the Extra Deck

And sometimes theres a card that provides the most strategic value

Cyberload Fusion X SPELL Quick-Play Fusion Summon 1 Fusion Monster from your Extra Deck that lists a "Cyber Dragon" monster as material, by shuffling the Fusion Materials listed on it into the Deck, from among your cards on the field and/or your face-up banished cards, but monsters you control cannot attack for the rest of this turn, except that Fusion Summoned monster

He is known as "Maximillion J

For example, Charizard is known as a Fire Type Pokemon, but Delta Species Charizard is Dark Type