Infinite Spitfire Combo - With 2 Severin on the board, Elvish Swindler tutors Spitfire from the deck. With 4 Severin on the board, spitfire costs 0 to activate and deals infinite damage.
If opponent disrupts the combo more than once, don't struggle to piece it back together. Just shift gears, leverage your relics for any advantage you can, and beat face with elves.