Herb Bag

Herb seeds are scattered across biomes that are unpleasant to visit at the start of a run, and getting your hands on Fireblossom or Deathweed normally means a trip you are not equipped for. A bag hands you a mix of seeds and finished plants without the trip. That is why it matters far more in Expert and Master than in a Classic world, where the trip is survivable anyway.

The bag rolls a handful of times and each roll picks independently, so duplicates are normal. A bag that gives you one plant in a big pile is not a bad bag, it is just how the odds fall. Open several before deciding your world is short on something.

Researching the bag itself turns the entire herb list into something you can duplicate at will, which is a much better return than researching every plant and every seed separately. If you find a pair of these in a surface chest on a Journey character, that is worth more than anything else in the chest.