Dark brim smith text clarification?

Siralim 2.0.13, Android 5, non-rooted, Galaxy S5, etc.

The text of the dark smith says “it grants the attack and luck of its artifact to creatures on its row.” Does this mean the dark brim smith adds its attack and luck to others, that it overwrites the attack and luck of others, or something else?

Thanks, as always, for this excellent game and support.

If its artifact has 50 Attack and 50 Luck, all the creatures in its row gain 50 Attack and 50 Luck.

That makes sense. Thanks!