Happy Birthday MaRo! When I was in university we founded a campus Magic club One event we ran was called 'Tribal' You had to choose a creature type, 60% non-land were creatures of the type, and the other 40% had to be thematic. We decided to run this event as a free-for-all multiplayer game with about 20 players. The game took 10 hours, and multiple players ended their turn, left to go to the store, and came back before their turn came back around. Clerics won at somewhere over 1000 life.