As I mentioned earlier, planeswalkers are great at ending the game if left unchecked, and thats a feature, not a bug
Its also pretty poor at removing commanders since the extra land means youll probably see it again next turn
Ruinous Ultimatum is the simplest but most brutal one, a thorough and one-sided board wipe that can easily put the caster in a winning position if they have the board state to back it up
Tempor-Ante Rules: Normal 60 card minimum deck to start the tournament (may drop below 60 cards later) Standard 15 card (optional sideboard) Players must bring a stack of blank cards for proxies (cardstock, acetone wiped cards, basic lands, or standard poker cards all work great) and extra sleeves to match their deck
For the rest of the turn, if more creatures enter, you still get to scry more, which is great