Sleight of Mind

Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change "target black spell" to "target blue spell." This effect lasts indefinitely.)

30th Anniversary Edition

Fifth Edition

Change the text of target permanent or spell by replacing all instances of one color word with another. (For example, you may change "nongreen creature" to "nonred creature." If this spell targets a permanent, play it as an instant.)

Ice Age

Change the text of target spell or permanent by replacing all instances of one color word with another. For example, you may change "Counters black spells" to "Counters blue spells." Sleight of Mind cannot change mana symbols.

Fourth Edition Foreign Black Border

Can’t change a color word to the same color word. It must be a different word.

Can target a card with no color words on it.

Alters all occurrences of the chosen word in the text box and the type line of the given card.

Can target a card with no appropriate words on it, or even one with no words at all.

Changing the text of a spell will not allow you to change the targets of the spell because the targets were chosen when the spell was cast. The text change will (probably) cause it to be countered since the targets will be illegal.

If you change the text of a spell which is to become a permanent, the permanent will retain the text change until the effect wears off.

It can’t change a word to the same word. It must be a different word.

It only changes what is printed on the card (or set on a token when it was created or set by a copy effect). It will not change any effects that are on the permanent.

You can’t Sleight proper nouns (i.e. card names). This means that you can’t affect a “Black Vise”.