Cheapest priced copy (Onslaught): $7.49 at Card Kingdom, near mint, their price list as of .
Artificial Evolution 
Instant · Rare · Onslaught · #67
Change the text of target spell or permanent by replacing all instances of one creature type with another. The new creature type can't be Wall. (This effect lasts indefinitely.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $7.49 to $39.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 67 | Rare | $7.49 | $39.99 |
9 rulings from Wizards of the Coast
- 4 October 2004It 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.
- 4 October 2004You choose the words to change on resolution.
- 4 October 2004Alters all occurrences of the chosen word in the text box and the type line of the given card.
- 4 October 2004If a creature's creature type has been changed by a spell or ability, changing the card's text won't affect or alter the new creature type.
- 4 October 2004Changing 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.
- 4 October 2004If 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.
- 4 October 2004It can't change a word to the same word. It must be a different word.
- 4 October 2004Can target a card with no appropriate words on it, or even one with no words at all.
- 4 October 2004You can't change proper nouns (i.e. card names) such as “Island Fish Jasconius”.