Either of these things tends to mean that the benefits they might bring to decks are not coming close to covering the costs they impose on your cube as a whole
While no new cards from Two Legends [OP-08] have been added to this deck, there have been certain cards which have restored this decks elite meta viability thanks to current metagame changes
4x Swamps
If you want to go the best storytelling route, combine the Hand, Eye, and Book of Darkness to create the actual Vecna, an 8/8 indestructible Zombie God that gets the triggered abilities of all three
Flavor Text "Abbandona i tuoi pensieri e lascia che il mio volere ti pervada." P/T Number 63 Language Italiano Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (7/23/2021) If Mind Flayer leaves the battlefield or you lose control of it before its Dominate Monster ability resolves, control of the target creature doesn't change at all.
Krarks Other Thumb (and associated dice mechanics) Coin flips have been a part of black-border Magic since the start, but somehow rolling dice never had the same level of legitimacy, and it was pigeonholed as an Un-set mechanic until very recently