Cheapest priced copy (Double Masters 2022): $0.69 at Card Kingdom, near mint, their price list as of .
Chaos Warp 
Instant · Rare · Murders at Karlov Manor Commander · #149
The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
55 printings · $0.69 to $49.99 at Card Kingdom
5 rulings from Wizards of the Coast
- 22 September 2011If the revealed card is not a permanent card, it remains on top of that library.
- 22 September 2011The owner of a token is the player under whose control the token was put onto the battlefield. If a token is shuffled into a player's library this way, that player shuffles before revealing the top card of that library.
- 22 September 2011If the revealed card is a permanent card but can't enter (perhaps because it's an Aura with nothing to enchant), it remains on top of that library.
- 22 September 2011If the permanent is an illegal target by the time Chaos Warp tries to resolve, it won't resolve and none of its effects will occur. No library will be shuffled and no card will be revealed.
- 22 September 2011A permanent card is a card with one or more of the following card types: artifact, creature, enchantment, land, or planeswalker.