Cards that prevent activated abilities are broken
Petrify was cast on opponent's creature Vladimir New Blood, however Vladimir's effect is still activating and cascading with other card effects on field.
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Rezzahan#77802 commented
Vadmir only has a triggered ability and a static ability. So there is no activated ability for Petrify to shut down.
An activated ability is an ability with the template [cost]:[effect], either on the card itself, or in the rules if it is a keyword ability. Look for the colon. ALL activated abilities have it. Activated abilities are the only abilities that can be activated, and doing so is a deliberate choice made by a player.
A triggered ability always uses the words "when", "whenever", or "at" to describe its trigger condition. Triggered abilities trigger, they do not activate and cannot be activated. And the trigger goes off when the trigger condition is met, wether the players want them to or not.
(Note, that the word "if" followed by a condition does not indicate a triggered ability., Rather it indicates a static ability that creates a replacement effect. Usually the phrase "if ... instead" is used for this.)