(all numbers are preliminary and I hate you already)
1v1
Each player is given a sealed pool of 70 cards. You each build 30-card sealed decks and play against each other. At the end of the game, any (non-basic land) cards on the battlefield, graveyard or exile are retired from your pool and replaced by an equal number of cards from your cube. Now you'll have a slightly different 70-card pool.
You build a new deck after every game.
Build again. Play best of X, the format can last forever, so play until you get tired. Your pool slowly churns and changes. If you're going to lose maybe you play out some shit cards to get them out of your pool. Maybe you try to win the game without overcommiting your bombs so they can be reused. Maybe you cut your losses and scoop early. Do whatever you think is best.
Scooping has flash and split-second.
1v1
Each player is given a sealed pool of 70 cards. You each build 30-card sealed decks and play against each other. At the end of the game, any (non-basic land) cards on the battlefield, graveyard or exile are retired from your pool and replaced by an equal number of cards from your cube. Now you'll have a slightly different 70-card pool.
You build a new deck after every game.
Build again. Play best of X, the format can last forever, so play until you get tired. Your pool slowly churns and changes. If you're going to lose maybe you play out some shit cards to get them out of your pool. Maybe you try to win the game without overcommiting your bombs so they can be reused. Maybe you cut your losses and scoop early. Do whatever you think is best.
Scooping has flash and split-second.