Labyrinth Raptor — ruling 1

Labyrinth Raptor’s second and third abilities apply to itself as long as it still has menace.

Labyrinth Raptor — ruling 2

The 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.

Labyrinth Raptor — ruling 3

If a creature is attacking a planeswalker, the planeswalker’s controller is the defending player.

Labyrinth Raptor : règles, fonctionnement et interactions (MTG)

Labyrinth Raptor is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Menace Whenever a creature you control with menace becomes blocked, defending player sacrifices a creature of their choice that's blocking it. : Creatures you control with menace get +1/+0 until end of turn.

How it works : Labyrinth Raptor

Original English text — Wizards of the Coast / Scryfall

#1April 17, 2020· Wizards of the Coast
Labyrinth Raptor’s second and third abilities apply to itself as long as it still has menace.
No other card is named in this ruling.
#2April 17, 2020· Wizards of the Coast
The 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.
No other card is named in this ruling.
#3April 17, 2020· Wizards of the Coast
If a creature is attacking a planeswalker, the planeswalker’s controller is the defending player.
No other card is named in this ruling.