Reference

Beebleboy's Magic Variants
Offers many variants to the game.
http://www.angelfire.com/games4/magicvariants/

Casual Magic the Gathering
Offers articles including set reviews, a library of Magic novels and a database for homebrew cards.
http://www.xs4all.nl/~sotty/casual_magic_the_gathering/

Crystal Keep
Set descriptions and card lists, official rulings summaries, card text files, symbols, and reprint policies.
http://www.crystalkeep.com/magic/

Danny's Site
Provides tips on decks and a worst combo section.
http://magiccollector0.tripod.com/magicthegathering/

Magic Card Scans
Scans of all of the cards in the sets of Beta, Arabian Nights, Antiquities, Exodus, Mirage, Visions, Nemesis, Legends, Urza's Saga, Tempest, and others.
http://narsuitus.tripod.com/magic_card_scans.html

Magic Rarities
Offers card set information and details about magic rarities such as misprints, special reprints, promos, oversized cards, and counters.
http://www.magiclibrarities.net/

Magic The Gathering Cards
A review for beginners.
http://www.freewebs.com/magicthegatheringcards/index.htm

MTGO Traders Corner
Estimated prices of cards with scans of each.
http://www.angelfire.com/wizard/mtgotrade/index.html

Searchable Online MtG Database
Allows users to search with card title, color, edition, type, and text. All records are cross-linked for searching.
http://drak0n.netfirms.com/cgi-bin/magic.pl

The ultimate Magic:The Gathering database
Database gathered by type, theme, mechanism, and sortable by price or efficiency.
http://umtgdb.free.fr/