The amount of burn damage you can pull off with this card is crazy
9 Mount Doom A scar upon the land

Labs Aang's Journey Aang, Master of Elements Absolving Lammasu Acolyte of Aclazotz Adventurer's Inn Adventurous Eater Aerith Gainsborough Agate-Blade Assassin Ajani's Pridemate Al Bhed Salvagers Alley Assailant Alquist Proft, Master Sleuth Amalia Benavides Aguirre Ancestor Dragon Anchovy & Banana Pizza Ancient Cornucopia Angel of Vitality Ant-Man's Army Apothecary Stomper Arabella, Abandoned Doll Arbiter of Woe Archway Angel Ark of Hunger Armored Kincaller Arnyn, Deathbloom Botanist Asgardian Citadel Aunt May Aurelia, the Law Above Authority of the Consuls Avengers Hangar Ayli, Eternal Pilgrim Bagel and Schmear Bake into a Pie Balamb T-Rexaur Bandit's Talent Basilica Stalker Basilisk Collar Battle Menu Beza, the Bounding Spring Birnin Zana Plaza Bishop's Soldier Blech, Loafing Pest Blood Hustler Bloodfell Caves Bloodthirsty Conqueror Bloomvine Regent Blossoming Sands Boggart Mischief Bogwater Lumaret Bounding Felidar Bristlebud Farmer Bumbleflower's Sharepot Cache Grab Candy Trail Canyon Crawler Carrot Cake Case of the Uneaten Feast Cat Collector Cauldron of Essence Cautious Survivor Charming Prince Chrome Companion Circle of Power City Pigeon Clay-Fired Bricks Cloudblazer Colossus of the Blood Age Comforting Counsel Commune with Evil Compassionate Healer Consuming Sepulcher

Over the years, Magic: The Gathering has undergone several major rules revisions, with significant updates in 1994, 1999, and 2009, reflecting their commitment to evolving gameplay
Yes, you can put lessons in your main deck