The Stealth of Stalking is a limited even. It is exclusive to Marvel Villains.
Some citizens have been able to keep their powers hidden. But since their powers are new, their powers are uncontrollable. Therefore the Masters of Evil want these citizens so they can get control of their family members for their release.
Investigate your city and be on the lookout for super powered or super abilitied freaks then corner them into private and capture them.