Richard and I had been brainstorming on ways to do two-state permanents
Its hard to conceive of a deck that violates rule 0 harder without actively bringing a cEDH deck to a casual pod
It feels for this reason like Skullclamp shouldn't be on the list but with the abundance of creatures and the effectiveness of the draw it can be used as an engine or as just a card draw effect in more decks than are able to use many of the cards on this list
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Contagion Engine gives every creature controlled by one opponent a -1/-1 counter and allows you to proliferate twice at the cost of four mana
More Card Draw: Staff of Nin, Mask of Memory (criminally underrated!), Endless Horizons, Land Tax, Weathered Wayfarer Graveyard Recursion: Sun Titan, Emeria, the Sky Ruin, Reveillark, Karmic Guide, Marshal's Anthem, Remember the Fallen, Haunted Fengraf, Buried Ruin, Death or Glory, Return to the Ranks, Angel of Glory's Rise, Trading Post Mobilizing The Troops Darien, King of Kjeldor is the primary token maker here