You can summon a creature face down so opponent doesnt know what it is; and it serves to hide the true casting cost of the creature, which you still have to spend is not how we would write these instructions now

Sort Card Type Blacephalon #32Rare $5.65 Blacephalon #104Holo Rare $8.57 Blacephalon #31Rare $1.34 Blacephalon #19Uncommon $1.15 Blacephalon - SM221 (Prerelease) #SM221Promo $9.37 Blacephalon GX #52Ultra Rare $13.63 Blacephalon GX #28Double Rare $2.00 Blacephalon GX - 023/095 #23Double Rare $2.49 Blacephalon GX - 097/095 #97Super Rare $7.50 Blacephalon GX - 105/095 #105Hyper Rare $17.99 Blacephalon GX - 2019 (Shintaro Ito) #52Ultra Rare $4.05 Blacephalon GX (Full Art) #199Ultra Rare $26.68 Blacephalon GX (Secret) #219Secret Rare $33.19 Blacephalon GX (Secret) #219Secret Rare $33.19 Blacephalon GX (Full Art) #199Ultra Rare $26.68 Blacephalon GX - 105/095 #105Hyper Rare $17.99 Blacephalon GX #52Ultra Rare $13.63 Blacephalon - SM221 (Prerelease) #SM221Promo $9.37 Blacephalon #104Holo Rare $8.57 Blacephalon GX - 097/095 #97Super Rare $7.50 Blacephalon #32Rare $5.65 Blacephalon GX - 2019 (Shintaro Ito) #52Ultra Rare $4.05

In 2021, a pristine corrected Dark Paladin sold for $15,000, proving that historical errors and rarity can drive Yugioh prices to astonishing heights
3 Rotom V Alternate Art Say what you want about the pull rates of Alternate Arts in this set they're still exciting to chase
I only became aware of the store a couple years ago myself
This Maliss card provides extra targeting protection for your Maliss Link Monsters, and its easy to get on the field during your opponents turn