Auriok Siege Sled — ruling 1

Remember that an effect that says you “can’t” do something overrides an effect that says you can or must do something. If you activate both of Auriok Siege Sled’s abilities on the same creature, that creature can’t block Auriok Siege Sled this turn.

Auriok Siege Sled : règles, fonctionnement et interactions (MTG)

Auriok Siege Sled 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

: Target artifact creature blocks this creature this turn if able. : Target artifact creature can't block this creature this turn.

How it works : Auriok Siege Sled

Original English text — Wizards of the Coast / Scryfall

#1December 1, 2004· Wizards of the Coast
Remember that an effect that says you “can’t” do something overrides an effect that says you can or must do something. If you activate both of Auriok Siege Sled’s abilities on the same creature, that creature can’t block Auriok Siege Sled this turn.
No other card is named in this ruling.