How are poison counters applied in a Two-Headed Giant game?

In a Two-Headed Giant game, poison counters are indeed shared by the team, impacting both players equally. When one player on a two-player team receives poison counters, those counters affect both team members collectively. This means that the total number of poison counters would be the sum of counters on the two players, and the team loses the game if the combined total of poison counters on the team reaches ten.

This mechanic is established in the rules specifically for the Two-Headed Giant format, where the health of both players is combined into a single life total, making team interactions crucial. Consequently, both team members are susceptible to any effects that cause poison counters, reflecting the cooperative nature of the format.

In contrast, the other options misrepresent how poison counters function in this specific format, either by suggesting individual tracking of poison counters or limiting the effects to only specific players, which doesn't align with the shared nature of gameplay in Two-Headed Giant.