Magic Set Editor: see link
GiMP: see link (although you will need to download templates to use
Adobe CS (much the same as GiMP, except Adobe is not a free download)
Alternativley you can buy a load of commons or land and use an ink eraser or just stick different pictues to the front of the cards. If you have the cards in sleeves the will be easier to use.
NB: It should be noted that proxy cards are not allowed to be used in DCI sanctioned tournaments. There are some tournaments where proxies are allowed. Always check with the tournament co-ordinator or tournament judges before presuming proxies are allowed.
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
"Valakut" is a land card in Magic: The Gathering.
No, the card "Black Lotus" is not legal in Magic: The Gathering tournaments.
The black and green Magic: The Gathering card is called "Abrupt Decay."
The black and white Magic: The Gathering card is called "Orzhov Signet."
The blue and white Magic: The Gathering card is called "Azorius Charm."
The Magic: The Gathering card identifier for the keyword "flying" is a small symbol of a pair of wings.
In my opinion, the most powerful Magic: The Gathering white card is "Swords to Plowshares."
The blue-green Magic: The Gathering card is called "Simic Growth Chamber."
The green and white Magic: The Gathering card I am referring to is called "Selesnya Charm."
The red-green Magic: The Gathering card you are referring to is called "Bloodbraid Elf."