Molder Beast — ruling 1

If Molder Beast and an artifact creature are both involved in combat during the same combat damage step, and that artifact creature is destroyed due to lethal combat damage, Molder Beast's triggered ability will trigger — but it will get the bonus too late to affect that combat.

Molder Beast : règles, fonctionnement et interactions (MTG)

Molder Beast 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

Trample Whenever an artifact is put into a graveyard from the battlefield, this creature gets +2/+0 until end of turn.

How it works : Molder Beast

Original English text — Wizards of the Coast / Scryfall

#1January 1, 2011· Wizards of the Coast
If Molder Beast and an artifact creature are both involved in combat during the same combat damage step, and that artifact creature is destroyed due to lethal combat damage, Molder Beast's triggered ability will trigger — but it will get the bonus too late to affect that combat.
No other card is named in this ruling.