Pit Spawn — ruling 1

Since this card has First Strike it will often deal damage during first strike damage dealing and its ability will exile the creature it damages before that creature can deal damage back.

Pit Spawn : règles, fonctionnement et interactions (MTG)

Pit Spawn 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

First strike At the beginning of your upkeep, sacrifice this creature unless you pay . Whenever this creature deals damage to a creature, exile that creature.

How it works : Pit Spawn

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
Since this card has First Strike it will often deal damage during first strike damage dealing and its ability will exile the creature it damages before that creature can deal damage back.
No other card is named in this ruling.