This deck has built-in tools that allow your cheap characters to trade up into more expensive characters, which will in turn allow you to deal with the opponent cheaply and still have ink left to redevelop your board
These are cards such as Shelinda, Yevon AcolyteShelinda, Yevon Acolyte, Tromell, Seymour's ButlerTromell, Seymour's Butler, or Rosa, Resolute White MageRosa, Resolute White Mage
I like this application of direct poison counters much better than infect or toxic
The learn mechanic works similarly in MTG Arena as it does in paper Magic
Ajani Vengeant Armageddon Bear Umbra Bend or Break Bontu's Last Reckoning Boom // Bust Catastrophe Chaos Orb Cleansing Decree of Annihilation Desolation Angel Devastation Elspeth Tirel Eye of Singularity Fall of the Thran From the Ashes Impending Disaster Jalum Grifter Jokulhaups Landfill Mine Layer Myojin of Infinite Rage Obliterate Ravages of War Ruination Scourglass Solar Tide Strategy, Schmategy The Argent Etchings Urza's Sylex Wake of Destruction Winter's Chill Wrath of Leknif (playtest) Zacama, Primal Calamity
It gives you pump and lifelink for your tribal creatures along with more creature tokens that do damage when they die