Sinister Six Synergy

There should be a Sinister Six synergy including: Rhino, Vulture, Doc Ock, Green Goblin, Venom, and Electro
There should be a synergy that lets you use all 6 of them in a team but the 6th character can only be a 3* at max.
There should be a synergy that lets you use all 6 of them in a team but the 6th character can only be a 3* at max.
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