The Nexus works with
The First Sliver and probably an include for the cEDH
The First Sliver decks. Those don't have slivers in them so every other creature is a sliver then and can cascade. In a casual sliver deck it means non-slivers are slivers and can be tutored, like the
Seedborn Muse which will help with tutoring more slivers each turn.
With
Descendants' Path if you feel a board wipe is coming you just need to hold up three mana instead of 5 + Hive to get a sliver before your upkeep so the path can fully trigger. Edit: sorry, already mentioned that, but as a reminder how it is better than the
Sliver Hive if you want a backup sliver generator in a pinch...
Similar if you want to get that extra card draw from
Dormant Sliver, much easier to tap 3 mana with the nexus if you don't have your queen out. One thing you learn with a sliver deck is 3 mana is your magic number. Most good slivers and the overlord's tutor need that.
Of course with
The World Tree you can get all of your slivers out.
The World Tree is going in my deck regardless because having an extra
Chromatic Lantern on a land is nice. If you can get to double WUBRG than it is instant win. Since I am doing a more casual sliver deck I will probably put in
Repopulate and
Haunting Voyage to ensure I can get all my slivers out.
I will be taking my sliver deck into a new direction now that they are reprinting a lot of slivers with
Time Spiral. I am going to have a standard set of cards that will always be in the deck. Important stuff like the at least one of the mana slivers with
Cryptolith Rite. Leave the other mana sliver in the pool I will mention in a moment.
Dormant Sliver for draw. The haste and flying sliver. And the legends. The rest I will pull out randomly from a pool of slivers so the deck will play differently every time I play it.
Edit: I thought you could click on someone's name and see their public decks.
Here's mine
https://deckstats.net/decks/150261/1557319-sliver-current