I am just getting back into Magic after several years of not playing, so forgive me for asking a basic question about how protection works: Suppose my opponent has a creature that has Protection From Artifacts. I have a non-artifact creature (let's say it is a Green 1/1 creature). I have a equipped this creature with a BoneSplitter (Artifact Equipment which gives +2/+0). What happens if I attack, and my opponent blocks? Does his Protection From Artifacts creature take a) no damage (since there is an Artifact in the mix of what is attacking him) b) 1 point of damage (since the BoneSplitter wouldn't affect him but the creature would) or c) 3 points of damage since it is a Green creature which is attacking?