is metalcraft ability optional magic

[keykey]

if I control three or more artifacts, can I still not use metalcraft ability if i dont want to

[Arix]

Depends on what card you're talking about.

[keykey]

Indomitable Archangel
Bleak Coven Vampires

[Arix]

No, neither of those are optional.

[keykey]

whats a card with metalcraft thats optional

[Arix]

Any activated abilities (obviously) and anything that says "may".

...which a quick search reveals that there are none.

[kip]

Argent Sphinx
Mox Opal
Vedalken Certarch

[Arix]

I know there are activated abilities, I meant the "may".

[Chodie]

They are all triggers aren't they? If you control THESE then THIS will happen.

[Arix]

No. Some are triggered, some are activated, some are just static.