Cheapest priced copy (Eldritch Moon): $0.35 at Card Kingdom, near mint, their price list as of .
Ride Down 
Instant · Uncommon · Eldritch Moon · #188
Destroy target blocking creature. Creatures that were blocked by that creature this combat gain trample until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 188 | Uncommon | $0.35 | $0.49 |
| Khans of Tarkir | 194 | Uncommon | $0.35 | $0.49 |
| Breaking News | 52 | Uncommon | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 20 September 2014In some rare cases, the blocking creature wasn't declared as a blocking creature that combat (for example, if it entered the battlefield blocking). In that case, the attacking creatures it was blocking won't gain trample even though the blocking creature is destroyed.
- 13 July 2016In some rare cases, the blocking creature wasn't declared as a blocking creature that combat (for example, if it entered the battlefield blocking). In that case, the attacking creatures it was blocking won't gain trample even though the blocking creature is destroyed.
- 13 July 2016The attacking creatures that the destroyed creature was blocking remain blocked (even if no other creatures were blocking them). An attacking creature with trample that has no creature blocking it will deal its combat damage to the defending player or planeswalker.
- 12 April 2024The attacking creatures that the destroyed creature was blocking remain blocked (even if no other creatures were blocking them). An attacking creature with trample that has no creature blocking it can deal its combat damage to the defending player, planeswalker, or battle.