Slot 777 Coins By Wazdan Demo Free Play
Reign of Winter Bowmage Marksman Guide - Maxroll
Has a best in slot legion piece for bossing and a best in slot link skill for most classes. Seems complicated but is actually pretty simple to play well.
Multiclass spell slots - Bugs & Support - D&D Beyond General - ...
Yeah, they should have the 4th-level slot when multiclassing in 2 full-caster classes. Is the campaign using XP leveling?