Surface cleaning, edge repair, corner correction, indent reduction, colour revival and crease reduction for cards with grade-limiting flaws
watch formats, meta shifts and how many borderless copies were printed, since these drive both dangerous downward corrections and positive price runs
Tyranid Swarm - Universes Beyond: Warhammer 40K Ive had games that have been won because my Haruspex has gained so much power that it deals huge damage to opponents, or converted its power to mana for a big late-game push
M Aggron EX card 94/160 also has a Full Art variant in the same set as card 154/160.
While one mana is easy enough to pay, when you have 5 copies of Flusterstorm on the stack, it becomes a lot harder for your opponent to manage
Because tokens cant exist in the graveyard, they cease to exist, but the game sees them enter the graveyard