Caress of Phyrexia

Mixed in 2HG — protects a teammate, but poison / infect.

• +8
  Protects a teammate

  'Target player' and 'target permanent' effects can be aimed at your teammate — you can't do that in a duel.

• −8
  Poison / infect

  A 2HG team loses at 15 poison counters rather than 10, so infect clocks are slower than the raw numbers suggest.

Ratings start at a neutral 50 and are adjusted by rules derived from 2HG's structure — shared 60 life, shared turns, two opponents. They'll be recalibrated against real play rates once teams start submitting decklists.