I like the flavor of the card, with hexproof making it difficult for other players to read the Journal, which grows only more powerful through Volos journeys
Not running enough recovery
As many as you like, but in a tournament, you could be called for stalling

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

Similar to Madness, Delirium was a mechanic chosen for the Shadows block to reflect Emrakul's slow and sure corruption of the minds of Innistrad's inhabitants
(Don't apply Weakness and Resistance for Benched Pokemon.) Retreat: C Weakness: F Resistance: None ------------------------------------------------------------------------------ Raichu C23 - Rare Type: Lightning Evolution: Stage 1 Evolution (Evolves from Pikachu) Level: 45 HP: 90 LLLL - Gigashock (30) Effect: Choose 3 of your opponent's Benched Pokemon and this attack does 10 damage to each of them