Cheapest priced copy (Ikoria: Lair of Behemoths): $0.49 at Card Kingdom, near mint, their price list as of .
Labyrinth Raptor 
Creature — Nightmare Dinosaur · 2/2 · Rare · Ikoria: Lair of Behemoths Promos · #193p
Menace
Whenever a creature you control with menace becomes blocked, defending player sacrifices a creature of their choice that's blocking it.
{B}{R}: Creatures you control with menace get +1/+0 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ikoria: Lair of Behemoths | 193 | Rare | $0.49 | $0.49 |
| Ikoria: Lair of Behemoths | 339 | Rare | $0.99 | $2.49 |
| Ikoria: Lair of Behemoths Promos | 193p | Rare | $0.79 | $0.79 |
| Ikoria: Lair of Behemoths Promos | 193s | Rare | — | $1.49 |
3 rulings from Wizards of the Coast
- 17 April 2020Labyrinth Raptor’s second and third abilities apply to itself as long as it still has menace.
- 17 April 2020The defending player sacrifices a blocking creature before combat damage is dealt. This may cause a single creature to be blocking the creature with menace; the blocking creature remains blocking. It will still deal and be dealt combat damage as normal.
- 17 April 2020If a creature is attacking a planeswalker, the planeswalker’s controller is the defending player.