Exotic catalysts enhance the power of the weapon significantly. Season pass weapons get a boost to their catalyst within the season pass theyre from but it runs out at the end of the season. The quest is tailored around having this boost to make it an achievable goal. Something like erianas vow or witherhoard are extremley powerful weapons, made more so through their catalysts. However for their catalysts you need to complete an absurd amount of activities, being 300 for witherhoard and 400 for erianas!!! Please could you reduce these values as it is very unfair on the player.
Many thanks - a concerned guardian