Forest of Rot

Event - Put a Rot Counter on each non-land Permanent controlled by the Team this token
has "At the Beginning of your upkeep pay {1} or Sacrifice this Permanent"
Spawn - Put six 3/3 Green Black Beasts called Rotbeasts into play under the Adventure's control
Reward - Tier 2 Treasure and Remove all Rot Counters from Permanents.