Cheapest priced copy (Core Set 2020): $5.99 at Card Kingdom, near mint, their price list as of .
Cavalier of Dawn 
Creature — Elemental Knight · 4/6 · Mythic · Core Set 2020 · #10
Vigilance
When this creature enters, destroy up to one target nonland permanent. Its controller creates a 3/3 colorless Golem artifact creature token.
When this creature dies, return target artifact or enchantment card from your graveyard to your hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $5.99 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2020 | 10 | Mythic | $5.99 | $13.99 |
| Core Set 2020 Promos | 10p | Mythic | $21.99 | $29.99 |
| Core Set 2020 Promos | 10s | Mythic | — | $21.99 |
| Special Guests | 84 | Mythic | $8.49 | $12.99 |
| Special Guests | 94 | Mythic | — | $44.99 |
One ruling from Wizards of the Coast
- 7 February 2025You may put this creature’s enters ability onto the stack without choosing any target. It will resolve with no effect. However, if you do choose a target and the target permanent is an illegal target by the time that ability tries to resolve, the ability won’t resolve. No player will create a Golem token. If the target is legal but not destroyed (most likely because it has indestructible), its controller will create a Golem token.