Cheapest priced copy (The List): $2.99 at Card Kingdom, near mint, their price list as of .
Questing Beast 
Legendary Creature — Beast · 4/4 · Mythic · Secret Lair Countdown · #17
Vigilance, deathtouch, haste
Questing Beast can't be blocked by creatures with power 2 or less.
Combat damage that would be dealt by creatures you control can't be prevented.
Whenever Questing Beast deals combat damage to an opponent, it deals that much damage to target planeswalker that player controls.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
8 printings · $2.99 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 171 | Mythic | $3.49 | $6.99 |
| Throne of Eldraine | 372 | Mythic | $6.49Out of stock | $22.99 |
| Throne of Eldraine Promos | 171p | Mythic | $4.99 | $6.99 |
| Throne of Eldraine Promos | 171s | Mythic | — | $9.49 |
| The List | ELD-171 | Mythic | $2.99 | — |
| Secret Lair Countdown | 17 | Mythic | $3.99 | $4.99 |
| Secret Lair Countdown | 44 | Mythic | — | $16.99 |
| Secret Lair Drop | 1263 | Mythic | — | $10.99 |
4 rulings from Wizards of the Coast
- 4 October 2019The damage Questing Beast deals to the target planeswalker as its last ability resolves isn't combat damage.
- 4 October 2019Once a creature with power 3 or greater has blocked this creature, changing the power of the blocking creature won't cause this creature to become unblocked.
- 4 October 2019Questing Beast only stops combat damage from being prevented by effects that specifically use the word “prevent.”
- 4 October 2019If the opponent dealt damage controls no planeswalkers, Questing Beast's last ability simply does nothing.