Let's talk about that Mirror Room side first
Not running enough recovery
Act of Heroism Aim High Assquatch Basil, Cabaretti Loudmouth Beacon Hawk Bounding Krasis Bringer of the Red Dawn Chain Stasis Chakram Retriever Civic Gardener Companion of the Trials Dauntless Aven Disciple of the Ring Djeru's Resolve Elite Interceptor Fear of Missing Out Flash Conscription Flash Thompson, Spider-Fan Focused Funambulist Fyndhorn Brownie Gerrard's Command Gift of Growth Glamermite Granite Witness High Alert Hyrax Tower Scout Initiate's Companion Inspirit Instill Energy Jandor's Saddlebags Kiora, the Tide's Fury Legolas's Quick Reflexes Magewright's Stone Militia Rallier Mirran Spy Moment of Valor Niblis of the Breath Ornamental Courage Overtaker Prepare // Fight Prepare // Fight Provoke Puppet Strings Puppeteer Quirion Ranger Raggadragga, Goreguts Boss Rally the Righteous Ray of Command Refocus Retreat to Coralhelm Scryb Ranger Seeker of Skybreak Seize the Day Sewer-veillance Cam Soldevi Golem Sparring Mummy Spidery Grasp Spinal Embrace Staff of Domination Steady Aim Stonybrook Angler Teardrop Kami Teller of Tales Temporary Insanity Thassa's Ire The Moment Thousand-Year Elixir Threaten Tidal Bore Tolarian Kraken Twiddlestick Charger Vigean Graftmage
Trimmed cards Cards with any sign of cutting, even a slight one
As many as you like, but in a tournament, you could be called for stalling
On top of that, you can pay one of each mana to find a legendary in your deck with a mana value less than her power and put it straight into play
