Magar of the Magic Strings Mahadi, Emporium Master Malfegor Manaforge Cinder Marsh Goblins Mary O'Kill Master of Cruelties Mauhr, Uruk-hai Captain Mayhem Devil Merciless Javelineer Mishra, Claimed by Gix Mishra, Lost to Phyrexia Mishra, Tamer of Mak Fawa Mogis, God of Slaughter Monoxa, Midway Manager Monstrous Carabid Moria Scavenger Mountain Titan Munitions Expert Murderous Redcap Neheb, the Worthy Nu and Sumi, Career Criminals Ob Nixilis, Captive Kingpin Obosh, the Preypiercer Ogre Siegebreaker Olivia Voldaren Olivia, Crimson Bride Olivia, Mobilized for War Orca, Siege Demon Orcus, Prince of Undeath Ozai, the Phoenix King Pavel Maliki Perforating Artist Prosper, Tome-Bound Pyre Zombie Rafter Demon Ragemonger Rakdos Augermage Rakdos Cackler Rakdos Firewheeler Rakdos Guildmage Rakdos Headliner Rakdos Ickspitter Rakdos Ragemutt Rakdos Ringleader Rakdos Roustabout Rakdos Shred-Freak Rakdos the Defiler Rakdos, Lord of Riots Rakdos, Patron of Chaos Rakdos, the Muscle Rakdos, the Showstopper Rankle and Torbran Raphael, Fiendish Savior Razing Snidd Rivaz of the Claw Rix Maadi Guildmage Rohgahh of Kher Keep Rohgahh, Kher Keep Overlord Rowan, Scion of War Rune-Brand Juggler Rushblade Commander Ruzic, Booed but Victorious Sanity Gnawers Sarcatog Sauron, the Lidless Eye Sawblade Skinripper Scarlet Spider, Kaine Seifer, Balamb Rival Setzer, Wandering Gambler Shadow Urchin Shady Informant

Understand that they are just cards and your life doesn't depend on them
This served two purposes
The card draw will always help
If all that is unnecessary, you're sure to have an enchantment or artifact worth targeting
Maze of Ith and Reconnaissance enable you to attack into unfavorable board states