"These skittering creatures were created to hunt the one true threat to Phyrexia: dissent."
—Venser, journal

Phyrexian Revoker

As Phyrexian Revoker enters, choose a nonland card name.
Activated abilities of sources with the chosen name can't be activated.

The Brothers' War Retro Artifacts

"To be in the presence of a revoker is to be truly alone."
—Kara Vrist, Neurok agent

As Phyrexian Revoker enters the battlefield, choose a nonland card name.
Activated abilities of sources with the chosen name can't be activated.

Commander Legends: Battle for Baldur's Gate

Double Masters

Activated abilities are written in the form "Cost: Effect." Some keywords are activated abilities (such as equip) and will have colons in their reminder texts. Static and triggered abilities of sources with the chosen name are unaffected.

Phyrexian Revoker's ability affects sources with the chosen name no matter what zone they are in. For example, a cycling ability of a card with the chosen name can't be activated from hand.