Playing Slivers in Commander is often mana intensive as you are usually in all five colors, so having creatures such as Gemhide and Manaweft Sliver are must-have inclusions when playing Slivers in Commander, as it allows you to cast your spells with ease
It seems like the mythic symbol doesnt matter as much for this, the assorted Wizards releases indicate that they all drop at the same rate in this slot
This, combined with Hardened Scales, means if a creature gets +1/+1 for being summoned, it would actually get +3/+3
While taking a card from your opponent's hand is great, targeted discard give you the additional value of seeing your opponent's entire hand, which allows you to play more efficiently, since you know which cards your opponent is likely to play over the coming turns
That's nasty good
These decks rarely have maindeck ways to remove Nether Void so most of the time we can just win by installing it on the second turn (just pray for them not having 1st turn Kird Ape)