Can teammates in a Two-Headed Giant game manipulate each other's cards or permanents?

In a Two-Headed Giant game, teammates control a shared life total and take their turns simultaneously, but they cannot manipulate each other’s cards or permanents. Each team's cards are treated as individual for the purpose of control and interactions. Therefore, players have no authority to physically or directly interact with the cards controlled by their teammate, which makes the assertion that it is against the rules accurate.

The concept of distinct control is fundamental in this format. While teammates can communicate and strategize together to influence the course of the game, the actual manipulation of cards or permanents is solely within the purview of the player who controls them. This ensures clarity in responsibility and accountability for all actions taken within the game.

The other choices reflect misconceptions about the level of cooperation permitted during play. "Yes, they can help each other" implies that direct manipulation is allowed, while "Only during their turn" suggests that control over a teammate's cards can change depending on whose turn it is, which is contrary to the rules. "Only with permission" incorrectly implies that some interaction could be permissible if agreement is reached, disregarding the specific control rules that apply in this format. Each player must maintain control over their own cards to preserve the integrity of the game