Inexorable Tide
The Draw-Go deck archetype is filled with instant-speed interaction, like permanents with flash (The Wandering Emperor, Hullbreaker Horror), removal spells, counterspells, and card draw (Consider, Memory Deluge)
The Enchantment also comes with a mana-cheap second step that burns opponents when they start their turn low on resources, and a final step that further increases the disparity between you and opponents, drawing you cards when their hands are depleted
Garvin actually suggests starting with Commander if you arent hyper-competitive
Dragon's Approach is a neat one that can be run alongside cards like Pyromancer Ascension, which is otherwise unplayable in Commander
To keep the game fair and fun, Wizards of the Coast regularly updates its MTG banlist , a compilation of cards that're banned (or restricted to a limited number of copies) in a constructed deck