Petrtify doesn't stop artifact from using its ability like the card states it should.
Using petrify on an artifact does not stop the artifact from using its ability. It continues to produce buffs for other cards.
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Rezzahan#77802
commented
It stops ACTIVATED abilities, not TRIGGERED abilities. Those are VERY different things. Learn the difference:
Activated abilities ALWAYS use the template [cost]:[effect]. If the ability is not in that form, it's not an activated ability.
Triggered abilities ALWAYS use the words "when", "whenever", or "at" to describe their trigger conditions. If the ability doesn't, you are not dealing with a triggered ability. Especially the word "if" followed by a condition is not indicating a triggered ability, it is indicating a static ability creating a replacement effect.
Only activated abilities can be activated, they cannot be triggered. Only triggered abilities can trigger, they cannot ever be activated.