mtg cards played from exile cost less Etherium-Horn Sorcerer [Commander 2017] Hearth Elemental

Though Midgar might be the most popular, I think Jidoor is traumatically good

Collective ResistanceCollective Resistance's third mode is a protection spell that leaves a creature hexproof and indestructible until the end of the turn

Vigilance plus lifelink is a big-time rattlesnake effect, and this version is by far the sweetest

Again, ebay will give you an excellent guide to how much these can vary (try doing a search for "Black Lotus" for example)

Its a pretty evil way to win if I say so myself, but hey, as my old buddy Dark Confidant would say, greatness, at any cost. Now, there are two ways to approach a mill strategy