Depends on which version of Vecna. Pre-ascension, he starts out as a Wizard who becomes very powerful, creating many spells, then he becomes a Lich. Through his extreme “longevity” as a lich he gains so much power that parts of his undead body cut off are permanent magic items. Later he battles to ascend to a demigod/god status.What level is Vecna in D&D?
He appeared on the cover of Open Grave (2009), where his statblock appears as a Level 35 Controller/Leader. Vecna's name is an anagram of Vance, in reference to Jack Vance, fantasy author whose memorize-and-forget spellcasting system inspired the Vancian spell system used by most early editions of Dungeons & Dragons.How much does Vecna weigh?
( Caster Level: 50th, Weight: 1 lb). - As a lesser deity, Vecna may take 10 on any check. Vecna treats a 1 on an attack roll or saving throw normally and not as an automatic failure.How many spell slots does Vecna have?
As a deity, Vecna had the ability to cast high-level spells more often than any mortal wizard could hope to achieve. Notably, he had three 9th-level spell slots, whereas the maximum for player characters is one.