Buckle up, because the numbers will blow your mind
To get there, we have to damage one or more opponents for exactly one life, meaning this deck wants to ping for the win
7: You get an emblem with "Whenever you cast a spell, this emblem deals 5 damage to any target." Legendary Planeswalker - Chandra Defiler of Instinct First strike As an additional cost to cast red permanent spells, you may pay 2 life
I also like that this list gets access to Atris in control mirrors, but he might fall prey to a discounted Mystical Dispute (but maybe your discard will eat away their hand before that can happen)
There are so many potential applications for this card, from generating a whole army of war machines with Mechanised Production to gaining absurdly huge pools of mana with Braid of Fire
Any Auras that can't enchant that permanent remain exiled.