Rakdos Pit Dragon — ruling 1

If Rakdos Pit Dragon loses double strike after first strike combat damage has been dealt, it won't deal damage during the normal combat damage step.

Rakdos Pit Dragon : règles, fonctionnement et interactions (MTG)

Rakdos Pit Dragon 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

: This creature gains flying until end of turn. : This creature gets +1/+0 until end of turn. Hellbent — This creature has double strike as long as you have no cards in hand.

How it works : Rakdos Pit Dragon

Original English text — Wizards of the Coast / Scryfall

#1May 1, 2006· Wizards of the Coast
If Rakdos Pit Dragon loses double strike after first strike combat damage has been dealt, it won't deal damage during the normal combat damage step.
No other card is named in this ruling.