Ill leave you with one of my picks for lower Bracket games: Scheming Symmetry
getting in a hit with an annihilator Eldrazi is game-warping enough that losing the clone a turn or two later doesnt matter
This isnt exactly a new mechanic
Typically, we see one-mana cantrips being played very often in Modern, Legacy, Historic, and really any format that has a solid density of them, because they're such good velocity tools for finding lands or action when needed
Considering how poorly these World Championships Decks sold, especially in their later years, the print run of these must be tiny compared to full-blown premier sets
Once youve taken control of the board, you want to shift from defense to offense quickly