Activated abilities of artifacts can't be activated.
Modern Masters 2017 Edition
The relic's purpose? Its design? Whatever the intent, it is now a mere curiosity that breaks up the horizon.
Current Legal Formats
Similar Cards to Stony Silence
- Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities, such as equip, are activated abilities and will have colons in their reminder text.
- No abilities of artifacts can be activated, including mana abilities.
- Stony Silence’s ability affects only artifacts on the battlefield. Activated abilities that work in other zones (such as cycling) can still be activated. Triggered abilities (starting with “when,” “whenever,” or “at”) are unaffected.