When evaluating the power level of a card, its always important to keep mana cost in mind

A Trail of Teacups Aang, Master of Elements Abandon Attachments Aether Syphon Agency Coroner All-Fates Scroll Alpharael, Dreaming Acolyte Alquist Proft, Master Sleuth Ambling Stormshell Ancestral Anger Ancestral Reminiscence April, Reporter of the Weird Arcane Epiphany Arcanis the Omnipotent Audience with Trostani Awaken the Honored Dead Bandit's Haul Bandit's Talent Bewildering Blizzard Beza, the Bounding Spring Biomechan Engineer Blitzball Bold Biochemist Bonecache Overseer Borrowed Knowledge Brass's Tunnel-Grinder Bruce Banner Byway Barterer Calamitous Tide Candlestick Captain Howler, Sea Scourge Case of the Crimson Pulse Casey Jones, Vigilante Cerebral Download Chalk Outline Chart a Course Cid, Timeless Artificer Circle of Power Clandestine Work Clive, Ifrit's Dominant Cloudblazer Colossus of the Blood Age Construct a Cosmic Cube Corrupted Conviction Cruel Truths Cryptex Decode Transmissions Demand Answers Demonic Pact Derelict Attic // Widow's Walk Derelict Attic // Widow's Walk Desperate Measures Dewdrop Cure Didact Echo Diresight Disturbing Mirth Doctor Octopus, Master Planner Does Machines Donatello's Technique Doomsday Excruciator Dragonfly Swarm Dreadwing Scavenger Dreamdew Entrancer Duelist of the Mind Eerie Gravestone Embrace the Paradox Emet-Selch, Unsundered Evidence Examiner Extraordinary Journey Fanatical Offering Fang, Fearless l'Cie Fear of Failed Tests

Alphabetically, here are all the cards that either are myr or make myr tokens: It's interesting to note that Coretapper is the only Myr that doesn't have the word Myr in its title
This may be the most popular card from the MTG Fallout set simply because its generically good, can deal with the occasional wide board, and Split Second makes it really difficult to stop this card
Also, extort causes life loss and not damage