The Aether Revolt team played with reverse engineer, but it was ultimately killed for being a bit too problematic developmentally
With Kaalia of the Vast already spoiled, theres the potential for a few others from her class to sneak in
Are your creatures routinely taking damage in Commander in amounts that would not kill them
Legendary Creature - Shapeshifter Orvar, the All-Form Changeling Whenever you cast an instant or sorcery spell, if it targets one or more other permanents you control, create a token that's a copy of one of those permanents
4 Slogurk, The Overslime A darker take on the Ooze concept from the nightmare plane of Innistrad, Slogurk nudges you towards an interesting land-centric playstyle
In Commander, that shuts off a shocking number of decks