These have four pieces of information: The attack name
Black Cat 1BB 1/3 Skulk (This creature can't be blocked by creatures with greater power.) Whenever CARDNAME deals combat damage to a player, that player mills nine cards, then you may exile an artifact card from that player's graveyard
Chart shows the price of Elemental HERO Spirit of Neos POTE-JP001 at the end of each month going back as long as we have tracked the item.
Game stores buying cards from people off the street are taking a bit of a gamble
Like most Magic: The Gathering cards, the value of Overlord of the Hauntwoods depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Duskmourn: House of Horror)
Being a 7/5 Hasty Trampler for six is pretty notable too, and makes this card scary as a reanimation target