get free mtg cards The 35 Best and 0-Mana Value in Magic Ranked Free from Flesh - Phyrexia:

Consider this the first chapter of a dedicated series on the subject

For stack interaction, Imp's MischiefImp's Mischief is really great in mono-black, and it just got a reprint in Commander Masters

Both BG Elves and WB Clerics love drain and gain effects already, so this slots right in perfectly

Luckily, the internet saw fit to give us a ton of examples and I also know a bit about EDH so I compiled the best 5 cards to look at for going in this dumb combo deck where, again, you only need 1 card that isnt your commander

Niv-Mizzet, the Firemind was the first version and was one of the most popular and powerful commanders during the early days of the Commander format