Basics... If there are 3 caltrops in play and I control a Lashknife Barrier, How much damage is dealt to my creatures if I attack? Caltrops Color= Artifact Type= Artifact Cost= 3 UD(U)/7(U) Text (UD/7th): Whenever a creature attacks, ~this~ deals 1 damage to it. Lashknife Barrier Color= White Type= Enchantment Cost= 2W PS(U) Text (PS): When ~this~ comes into play, draw a card. ; If a source would deal damage to a creature you control, it deals that much damage minus 1 to that creature instead.