My Little Pony: Friends Forever — IDW Publishing
Issue: #17
Twilight Sparkle is feeling overworked and stressed out! She decides to visit the most Zen pony she knows-Big Mac! But Mac is feeling less than communicative, so Twilight will have to go where no pony has gone before-inside Big Mac's mind!
Creators: Bobby Curnow, Heather Breckel, Neil Uyetake, Brenda Hickey, Amy Mebberson, Ted Anderson
Characters: Rainbow Dash, Applejack, Twilight Sparkle, Mrs. Cake, Mr. Cake, Apple Bloom, Mayor Mare, Big Macintosh, Spike