It would need to be retooled to do a tiny amount of tower damage so compensate, and this would completely change the card. It doesn't need the keyword.
This is akin to the discussion of whether certain Rare Nature cards should also have the keywords of the elements they feature. Just because something makes sense from a story or conceptual standpoint doesn't mean it would benefit the game, and changes that benefit the game have to come first.
We could change the name of this one, though, since I'm sure this won't be the last time someone looks at this and wonders why it doesn't possess the keyword featured in its title.