Armored Skaab — ruling 1

If you have fewer than four cards in your library when Armored Skaab enters, you'll put all of them into your graveyard.

Armored Skaab : règles, fonctionnement et interactions (MTG)

Armored Skaab 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

When this creature enters, mill four cards.

How it works : Armored Skaab

Original English text — Wizards of the Coast / Scryfall

#1September 22, 2011· Wizards of the Coast
If you have fewer than four cards in your library when Armored Skaab enters, you'll put all of them into your graveyard.
No other card is named in this ruling.