Teammate

In a Magic multiplayer game between teams, a player's teammates are the other players on their team. 
==Description==
The most popular sanctioned multiplayer format that has players on teams is Two-Headed Giant. Cards referencing a player's teammates have also appeared in the Unglued, Unstable, Future Sight, and most notably, Battlebond expansions. 
The first cards to reference a teammate came in Unglued, relegated to silver-border, as the rules didn't yet support the concept. <c>Imperial Mask</c>, from Future Sight, was the only one to exist in black border for 9 years, until the release of the surge mechanic in Oath of the Gatewatch. A Two-Headed Giant-focused supplementary set Battlebond was released on June 8, 2018, featuring 14 cards referencing either teams or teammates. 
==Rules==
==Playtesting==
In Professional play, many Magic players also work with a team of some sort, to brew new decks and playtest them.
==References==