You play green and black either as dominant colors or just splash for a couple of powerful cards like Regrowth, Demonic Tutor or Mind Twist
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Astarion, the Decadent: Use the creature's power as it last existed on the battlefield to determine the value of X
Much like Tameshi, it has an ability that lets you yank Second Chance out of the graveyard after it sacrifices itself
What makes Stone of Erech stand out compared to both of these is three things
It digs deep, hides key cards from discard effects, and sets up perfect draws
Like most Magic: The Gathering cards, the value of Myr Prototype depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Mirrodin)