Illusion Chain is located on the far right side of the snake buttress, just left of a large roof system that is close to the ground. It is a fairly long pitch of somewhat sustained slab climbing, protected by good bolts about 15' apart.
Clamber up onto a tombstone flake while being a bit harassed by a pine tree. Move up to the right and clip a few bolts, being mindful of crater potential at the 2nd and 3rd bolts. Keep chasing bolts while trying not to peel of the flakes until you reach the anchors on a ledge at about 140' or so. There are a couple cracks up high that offer supplemental protection of varied size, particularly hand-sized cams.
Rap the route from an anchor consisting of a good bolt and 2 crappy ones.
Bring about 10 to 12 draws, and a light rack of cams.