# If I have the Armor of Shadows Eldritch Invocation, do I know the Mage Armor spell? [duplicate]

The warlock's Eldritch Invocation "Armor of Shadows" says:

You can cast mage armor on yourself at will, without expending a spell slot or material components.

Does this mean I know the spell? That is, can I cast it on someone else by expending a spell slot and material component as normal?

## marked as duplicate by András dnd-5e StackExchange.ready(function() { if (StackExchange.options.isMobile) return; $('.dupe-hammer-message-hover:not(.hover-bound)').each(function() { var$hover = $(this).addClass('hover-bound'),$msg = $hover.siblings('.dupe-hammer-message');$hover.hover( function() { $hover.showInfoMessage('', { messageElement:$msg.clone().show(), transient: false, position: { my: 'bottom left', at: 'top center', offsetTop: -7 }, dismissable: false, relativeToBody: true }); }, function() { StackExchange.helpers.removeMessages(); } ); }); }); Jul 24 at 8:23

• Related but distinct: rpg.stackexchange.com/questions/59056/… – Himitsu_no_Yami Jul 23 at 18:42
• How is the linked question distinct? – András Jul 24 at 8:23
• I'm not asking if it's one of my spells known. I'm asking if since the invocation gives me the ability to cast it without it being a spell known if I'm able to cast it on someone else by more traditional means without having to learn it through traditional means. @András – Himitsu_no_Yami Jul 24 at 15:52
• Just realized I did originally ask "Does this mean I know the spell?". That may not be my best wording and it's certainly not the focus of the question. The focus of it was "can I cast it on someone else by expending a spell slot and material component as normal?" – Himitsu_no_Yami Jul 24 at 18:42
• this is a distinction without a difference. – András Jul 25 at 7:51