When does the top item on the stack resolve in a Two-Headed Giant game?

In a Two-Headed Giant game, the top item on the stack resolves when all players pass in succession. This is consistent with the game mechanics for resolving spells and abilities in Magic: The Gathering, where players must pass priority if they choose not to take any actions. In a multiplayer format like Two-Headed Giant, all players in both teams must pass consecutively for the top item on the stack to resolve. This means that if one player takes an action or responds to something on the stack, the process does not progress until all players have passed without taking any further actions.

This principle underscores the collaborative nature of a Two-Headed Giant game, where partners coordinate their strategies and actions. It also emphasizes the importance of understanding priority and the stack mechanics that govern how and when spells and abilities resolve.