Long absent members Iron Man and Thor rejoin the Avengers after personal leave. The team must destroy an Adamantium cylinder created by mad scientist Myron MacLain.
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(Cover Date: July, 1969)
Summary: As part of a SHIELD test, the Avengers try to damage a cylinder of adamantium, but without success. Under some malevolent influence, Vision later steals the cylinder off the SHIELD helicarrier. Vision shows back up at Avengers Mansion to distract the team before Ultron-6 makes his appearance, wearing his new adamantium body.