From Green Ronin’s webstore:

Each Power Profile takes a look at a particular type of super-power in Mutants & Masterminds game terms, putting together the effects and modifiers from the Hero's Handbook to present different abilities associated with that power, from offensive and defensive to movement and utility. It also discusses different power descriptors and how they affect game play, as well as features and complications associated with the power. It's a ready-made guide to creating new heroes and villains for your M&M game!

Power Profile: Summoning Powers

Why do all of the difficult and dangerous work yourself when you can summon up someone—or something— else to do it for you? Summoning Powers are all about agents, non-player characters called up by Summon effects, and what you can do with them. It covers conventional minions from infernal demons to animated machines but also powers like duplication, combined forms, empowering, and anatomic separation! This product is for Mutants & Masterminds Third Edition.