Cheapest priced copy (Unfinity): $15.99 at Card Kingdom, near mint, their price list as of .
Clown Car 
Artifact — Vehicle · 1/1 · Uncommon · The Zeta Set · #100
When this Vehicle enters, roll X six-sided dice. For each odd result, create a 1/1 white Clown Robot artifact creature token. For each even result, put a +1/+1 counter on this Vehicle.
Crew 2
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
6 printings · $15.99 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | UNF-186 | Rare | — | — |
| The Zeta Set | 100 | Uncommon | — | — |
| The Zeta Set | 221 | Uncommon | — | — |
| The Zeta Set | 342 | Uncommon | — | — |
| Unfinity | 186 | Rare | $15.99 | $15.99 |
| Unfinity | 472 | Rare | — | $19.99 |
8 rulings from Wizards of the Coast
- 7 October 2022If X is a very large number, you may be required to roll more dice than you physically can in a reasonable time frame. In such cases, we encourage you to use digital resources for simulating die rolls or generating random numbers.
- 7 October 2022If an ability triggers "whenever you roll a die," it will trigger whenever you roll any die, including the planar die. This is a change from previous Un- rules. Some abilities use the result to determine part of the effect. If you get a non-numerical result (currently just the planar die, but the future is long), that part of the effect won't do anything.
- 7 October 2022Results can be numbers not ordinarily possible on a six-sided die. Spells like Scooch can change the result to 0 or 7, for example.
- 7 October 2022Something in the game must tell you to roll a die. If you roll a die for any other reason (to simulate a coin flip, to choose pizza toppings, to create alternate timelines), that roll doesn't count.
- 7 October 2022In an Un- game, if X is actually infinite (Urza's Fun House is a pathway to many game states some consider to be unnatural), you can assume that every natural result on a six-sided die is rolled infinite times, leading to infinite Clown Robot tokens and infinite +1/+1 counters on Clown Car. If abilities trigger from you rolling those results, they will each trigger infinite times. Have fun!
- 7 October 2022Each die is identified by the number of faces it has. A six-sided die is a die with six equally likely outcomes: 1, 2, 3, 4, 5, and 6. The roll must be fair. Although physical dice are recommended, digital substitutes are allowed except in cases where the physical die is required for the effect.
- 7 October 2022Some effects may modify the result of a die roll. This may be part of the instruction to roll a die, or it may come from other cards. Anything that references the "result" of a die roll is looking for the result after these modifications.
- 7 October 2022If a die is rerolled, the original roll essentially never happened: it doesn't cause any abilities to trigger, and no effect that cares about die rolls will consider it.