Ouphe Vandals — ruling 1

Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.

Ouphe Vandals — ruling 2

The ability targets an ability on the stack, not the artifact, so it can destroy an artifact with protection from green or one that can’t be targeted by spells and abilities.

Ouphe Vandals : règles, fonctionnement et interactions (MTG)

Ouphe Vandals 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

, Sacrifice this creature: Counter target activated ability from an artifact source and destroy that artifact if it's on the battlefield. (Mana abilities can't be targeted.)

How it works : Ouphe Vandals

Original English text — Wizards of the Coast / Scryfall

#1June 8, 2016· Wizards of the Coast
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.
No other card is named in this ruling.
#2December 1, 2004· Wizards of the Coast
The ability targets an ability on the stack, not the artifact, so it can destroy an artifact with protection from green or one that can’t be targeted by spells and abilities.
No other card is named in this ruling.