Encounter: Deadly Forest Ambush

Party Composition: 4 Level 4 Adventurers

Challenge Rating: Deadly

Monsters:

1. 1 x Owlbear (CR 3)
2. 2 x Giant Spiders (CR 1)

Battlefield Events:

• Sudden Rainstorm: At the start of the second round, a sudden rainstorm begins, creating difficult terrain and imposing disadvantage on ranged attack rolls.
• Fallen Trees: At the start of the third round, a tree falls in a random area of the battlefield (roll a d6 to determine the location), dealing 2d6 bludgeoning damage to any creature in a 5-foot radius.

Environment: Dense forest with underbrush and trees providing cover and obstacles.