Text-changing effect

Text-changing effects change the text appearing in text box, type line, or name of a card. These effects are informally known as hacks or word-changers. 
==Description==
Text-changing effects replace each instance of a characteristic, of a permanent, or of a spell, with another of the same genus (e.g., color) or type (e.g., basic land subtype, creature subtype). Text-changing effects are considered exclusively within blue magic according to the historic and current understanding of the color pie, and all cards with a text-changing effect to date have been blue except one.
The prevalence of this ability has been reduced from "rare" to "functionally unused" as color and land hate have become less blunt and overbearing in gameplay.
The term "hacks" has been recognized by at least Fifth Edition, by the Glossary of the Magic: The Gathering Official Strategy Guide.
==Rules==
==List of text-changing effects==
===Color word hacks===
Four cards can change a color word to another:
*
*
*
* (Alpha, Beta, Unlimited Edition, Revised Edition, Fourth Edition, Ice Age, Fifth Edition)
Note that this ability is functionally different from those of color changers.
===Basic land subtype hacks===
One card can change a basic land subtype to another:
* (Alpha, Beta, Unlimited, Revised Edition, Fourth Edition, Fifth Edition)
===Color word and/or basic land subtype hacks===
Five cards can change a color word to another or a basic land subtype to another:
*
* (Mirage, Eighth Edition, Ninth Edition, Tenth Edition)
*
*
*
===Creature subtype hacks===
Two cards can change a creature subtype with another:
*
*. This is the only black card to change text.
===Other hacks===
*Champions of Kamigawa featured <c>Swirl the Mists</c>, an enchantment that can replace all instances of color words in the text of spells and permanents with a chosen color word, chosen as it enters the battlefield.
*Unhinged featured <c>Magical Hacker</c>, a creature that can replace plus ("+") signs in text boxes with minus ("−") signs and vice versa.
* from Unstable modifies any numerical value by one. One mode on a variant of has the same effect.
*The mechanics Cleave and Overload change their text when more mana is paid.
*<c>Exchange of Words</c> from Unfinity can switch the entire text boxes of two creatures. <c>Truss, Chief Engineer</c> and <c>Scooch</c> change numbers
==See also==
*Color changers
*Land changers
*Cleave
*Overload
==References==
Category:Miscellaneous mechanics