Green Confluence

Cannot be countered. Split second. X is the number of players +1. Each player puts all creatures in hand on the battlefield and discards the rest. All non-creature permanents become creatures with power and toughness equal to their mana value +1. All permanents lose all abilities. All creatures owned by one player fight with each other creatures owned by the next player, starting with the one whose turn is after you and ending with you. The owner of the last creature surviving on the battlefield, if any,