Cheapest priced copy (Commander 2019): $0.59 at Card Kingdom, near mint, their price list as of .
Aeon Engine 
Artifact · Rare · Commander 2019 · #52
This artifact enters tapped.
{T}, Exile this artifact: Reverse the game's turn order. (For example, if play had proceeded clockwise around the table, it now goes counterclockwise.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2019 | 52 | Rare | $0.59 | — |
| The List | C19-52 | Rare | — | — |
4 rulings from Wizards of the Coast
- 23 August 2019This effect reverses the turn order for players established at the beginning of the game. While the order is reversed, anything that cares about this order (such as determining in what order choices are made) will use the new order.
- 23 August 2019If the turn order is reversed during a two-player game, or during a multiplayer game that only has two players left, it has no noticeable effect on the game.
- 23 August 2019If the turn order is reversed during an extra turn, the next non-extra turn will be taken by the next player in turn order from the last player who took a non-extra turn. The order of any pending extra turns isn’t affected.
- 23 August 2019If the game’s turn order is reversed again, it will return to the default order used at the beginning of the game.