100 card sleeves MintKeeper Standard Soft (100 Sleeves) Acid free Book of Curses – Spellbook

Attack with a creature, like Gonti, copy the myriad trigger with Strionic Resonator (since myriad says Whenever) to get double the attacking tokens, and then Panharmonicon gives you double for the attacking creatures

So, for some harder changes, I recommend: -1 Dragon Pulse, and -1 or 3 Odd-Eyes +2 Xiangke Magician - its level, typing, and attribute compliment Dark Magician stuff very well, and his quick-play effect to negate effects comes in handy in a lot of situations

Generally, the rarer the misprint, the more its worth to the right buyer

Bilbo can help find them and get them into play

If you want a discount, then LP copies sit just below the $100 mark, followed by MP cards, which fetch about $64 and offer a much more affordable bar of entry