Spellcasting. Riyen is a 9th-level spellcaster. His spellcasting ability is intelligence (spell save DC 18, +10 to hit with spell attacks). Riyen has following wizard spells prepared:

Cantrips (at will): poison spray, guidance, prestidigitation

1st level (4 slots): magic missile, tenser’s floating disk, identify

2nd level (3 slots): misty step, darkness, web

3rd level (3 slots): [Tooltip Not Found], summon shadowspawn, thunder step

4th level (2 slots): dimension door, banishment

5th level (1 slots): legend lore

Shadowmagic. When Riyen attempts to cast a spell there is a % chance he must roll in the enchanted wild magic table depending on the spells level

shadow mastery. Riyen has learnt to control the shadow Magic’s around a creature. when a creature within 30ft of Riyen makes an ability check, saving throw or attack roll he can use his reaction to add 1d10 to the results