Cheapest priced copy (The Big Score Promos): $2.49 at Card Kingdom, near mint, their price list as of .
Nexus of Becoming 
Artifact · Mythic · The Big Score · #25
At the beginning of combat on your turn, draw a card. Then you may exile an artifact or creature card from your hand. If you do, create a token that's a copy of the exiled card, except it's a 3/3 Golem artifact creature in addition to its other types.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $2.49 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Big Score | 25 | Mythic | $2.79 | $3.49 |
| The Big Score | 55 | Mythic | $10.99 | $22.99 |
| The Big Score | 90 | Mythic | $4.99 | $4.49 |
| The Big Score Promos | 25p | Mythic | $2.49 | $2.99 |
3 rulings from Wizards of the Coast
- 12 April 2024Except for the listed exceptions, the token copies exactly what’s printed on the exiled card and nothing else.
- 12 April 2024If the exiled card has {X} in its mana cost, X is 0.
- 12 April 2024Any enters-the-battlefield abilities of the copied card will trigger when the token enters the battlefield. Any “as [this permanent] enters the battlefield” or “[this permanent] enters the battlefield with” abilities of the copied card will also work.