Chippin' away, part 1

I've got a backlog of Transformers comics to summarize, and I'm finally taking a stab at clearing it out. Tonight's featured title is Devil's Due Publishing's G.I. Joe vs. the Transformers 4: Black Horizon limited series, a lovely little tale about planet-eating robots, technology-hating subterranean serpents, and enough grunting yetis to keep the National Enquirer busy for a year...