View as Gallery View as List UR Ultra Rare UR Ultra Rare C Common C Common C Common C Common SR Super Rare C Common SR Super Rare C Common UR Ultra Rare SE Secret Rare STAR Starlight Rare UR Ultra Rare SR Super Rare SR Super Rare SR Super Rare C Common C Common C Common C Common SR Super Rare SR Super Rare UR Ultra Rare C Common SE Secret Rare C Common SR Super Rare C Common C Common UR Ultra Rare C Common SR Super Rare C Common C Common C Common SE Secret Rare SE Secret Rare SR Super Rare C Common UR Ultra Rare SR Super Rare UR Ultra Rare SE Secret Rare STAR Starlight Rare UR Ultra Rare SE Secret Rare UR Ultra Rare C Common SE Secret Rare STAR Starlight Rare SR Super Rare SR Super Rare SR Super Rare SR Super Rare C Common SR Super Rare C Common C Common C Common SR Super Rare SE Secret Rare C Common C Common C Common C Common UR Ultra Rare SR Super Rare C Common C Common SR Super Rare C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common C Common SE Secret Rare UR Ultra Rare UR Ultra Rare STAR Starlight Rare UR Ultra Rare C Common SE Secret Rare C Common SR Super Rare SR Super Rare SR Super Rare SR Super Rare SR Super Rare SR Super Rare SR Super Rare STAR Starlight Rare Numbers Eveil X SPELL If your opponent controls a monster(s) Special Summoned from the Extra Deck and you do not: Choose 4 "Number" Xyz Monsters from your Extra Deck with different Ranks, plus a 5th "Number" Xyz Monster whose "Number" value in its name equals the combined "Number" values of the 4 other monsters, Special Summon that 5th "Number" monster (this is treated as an Xyz Summon), and attach the 4 chosen monsters to it as material, but you cannot Special Summon monsters, except "Number" Xyz Monsters, while you control that face-up monster

They can't do this on their own, but other effects and abilities like Galazeth Prismari or improvise can tap Treasure tokens without sacrificing them
The constant threat of extra card draw for you makes Rhystic Study a staple in blue-based Commander decks, and you'll be surprised the lengths some players will go to to prevent their opponents drawing extra cards
This can create lots of fun chaos at the table that you just get to sit back and watch
Pawn shops Another option to consider is pawn shops
For big binders that matters