You suffer damage as he attacks as a Dark Knight until you reach half your life total, then he transforms and makes your characters invincible
Gotta mention Sephiroth, Fabled SOLDIER too, though I left it off the list proper since we covered it in our commanders overview
This means including cards that activate the triggers more frequently and amplify the effects
The obvious use of Treasures is for their mana, but their sheer numbers can easily turbo-charge cards like Nettlecyst, or turn Mayhem Devil and Korvold, Fae-Cursed King into game-ending problems
Because Carmen cares about permanents , not just creatures , you can set up fantastic value engines where you sacrifice cards like Ichor Wellspring away and get them back to outdraw your opponents
In Commander, swap this with #1