Creepers

Creepers can be acquired by killing Incarnates (name unofficial) in missions. Creepers start as seeds which grow into Creeper sprouts much like other flora. Level 2+ Creeper can be harvested for various weeds that you typically find in missions. Level 5+ Creepers can corrupt adjacent Spruce and Forest Tree logs of all 3 sizes (Log, Pile of Logs, Bunch of Logs) and turn them into Corrupted Logs. Bunch of Corrupted Logs can be merged into an egg-shaped pod that when tapped will result in an effect similar to tapping the purple pods in levels that the Incarnates hatch from.