Signed cards can be worth more or less than an unsigned card. Some collectors see signed cards as marked.
Cards signed by an individual other than the artist are usually worth less than an unsigned cards, unless that are signed by a person of note from Wizards of the Coast, like Richard Garfield.
Signed cards are legal in tournaments per the official DCI Universal Tournament Rules (linked), which state under Rule 28- Taking Notes: Cards used in a tournament may not have writing on their faces other than signatures or artistic modifications.
Unless the card is from Alpha, Beta or unlimited, the card has an average value of $0.35
Us$15-20
Magic the Gathering is not a cult. It is a collectible card game.
there are some card shops but to magic the gathering shops in perticular
Magic the Gathering is a TCG, or Trading Card Game. There is a show about it, though.
no
A Mint/Near Mint version of the card is around US$14, so I would say around double(ish) to a collector. Also depends if it is Foil.
nerdy kids and card shops?
The card is called 'Traumatize'.
Any card that does not have the subtype '- Aura' is a non-Aura card.
The first release of Magic the Gathering cards was on August 5, 1993.
A foiled card is one with a shiny, reflective surface.