Cheapest priced copy (Final Fantasy Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Coin of Fate 
Artifact · Rare · Final Fantasy Commander · #15
When this artifact enters, surveil 1.
{3}{W}, {T}, Exile two creature cards from your graveyard, Sacrifice this artifact: An opponent chooses one of the exiled cards. You put that card on the bottom of your library and return the other to the battlefield tapped. You become the monarch.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy Commander | 15 | Rare | $0.49 | $0.49 |
| Final Fantasy Commander | 104 | Rare | $0.49 | $0.99 |
5 rulings from Wizards of the Coast
- 6 June 2025If combat damage dealt to the monarch causes that player to lose the game, the triggered ability that causes the controller of the attacking creature to become the monarch doesn't resolve. In most cases, the controller of the attacking creature will still become the monarch as it is likely their turn.
- 6 June 2025If the triggered ability that causes the monarch to draw a card goes on the stack and a different player becomes the monarch before that ability resolves, the first player will still draw the card.
- 6 June 2025The game starts with no monarch. As a player becomes the monarch, the current monarch (if any) ceases being the monarch. There is never more than one monarch at a time.
- 6 June 2025If the monarch leaves the game during another player's turn, that player becomes the monarch. If the monarch leaves the game during their turn, the next player in turn order becomes the monarch.
- 6 June 2025There are two inherent triggered abilities associated with being the monarch. These triggered abilities have no source and are controlled by the player who was the monarch at the time the abilities triggered. The full texts of these abilities are "At the beginning of the monarch's end step, that player draws a card" and "Whenever a creature deals combat damage to the monarch, its controller becomes the monarch."