Avengers Epic Collection v21 - The Collection Obsession (2018)

Collects Avengers (1963) #334-344, Annual #20; Avengers: Deathtrap - The Vault; material from Incredible Hulk Annual #17, Namor the Sub-Mariner Annual #1, Iron Man Annual #12, Avengers West Coast Annual #6.
To battle the Brethren! Thane Ector and his allies devastated the Collector - and now they've come for Earth. And to stop them, the Avengers must call in reserves, returnees - and a new recruit! But will the humbled Elder of the Universe aid Earth's Mightiest, or renew his collection obsession? Hate may conquer all when the Sons of the Serpent strike - unless the Avengers and New Warriors can do something about it! But how will our heroes react when a fallen comrade seemingly returns? Plus, the Subterranean Wars rage, and the Vault prison becomes a deathtrap filled with deadly menaces - including Venom!