Once transformed into Green Goblin it trades conniving away for mayhem which feeds on any other looting abilities you have
So if you can keep your commander in play you get benefits from your backgrounds, plus the powerful effects from cards like Skyhunter Strike Force for a massive melee, Tyrant's Familiar to burn off creatures, and Thunderfoot Baloth to finish opponents with a permanent, only slightly smaller Overrun
However, these require Energy cards
Lions Eye Diamond decks are also a lot better, but I have no idea how much higher that card can feasibly go
What about Deckbuilder Toolkits
This means that when they deal combat damage to a player if they aren't renowned, you put a +1/+1 counter on them, and they become renowned