Id say change the Combat Achievement "Bryophyta Champion" to a hard tier cause getting the mossy key is just the dumbest thing. With his drops being horrible as well. He's just overall a crappy boss to try to get achievements for.
#Bryophyta
nova sorrel
pseudo gust
To kill 5 bryophyta for anyone wondering:
https://oldschool.runescape.wiki/w/Bryophyta_Champion
vivid laurel
1/50 for mossy keys on slayer task 🙂
solemn atlas
A few giant/mossy keys would be such an awesome one time quest reward
halcyon urchin
Honestly getting 1 free giant key would actually be a good idea for a f2p quest