Sleeving your prevents dings and scratches that ruins the look, hurts resale value or in some cases even breaks the game after all its no fun if you can tell from the card back whos secretly a lizard fascist or werewolf
Using concept artwork from Yoshitaka Amano would have done a lot for how the card looks, and could have even increased its secondary market value
Koma, World-Eater Rarity: Rare TYPE: Legendary Creature SUBTYPE: Serpent CMC: 7 Mana cost: USD: $0.48 EUR: 0.88 TIX: 0.02 EDHREC RANK: 2228 (8/12) This spell can't be countered
Squirtle #68 Pokemon Team Rocket Keep track of your collection value over time
Although TCGPlayer is still gathering information on the market value of this card as well, their listed price of $994 is equal to the average pricing of sales on eBay as well, which makes it feel a bit more consistent and solid
If you counter a problematic permanent before it enters the battlefield, it ends up in the graveyard same as if it had entered the battlefield and you removed it