I love this kind of shit.
I don't know much about Tyranids but if
>>44776514 is right then is something to worry about. How do they transport? Like the Leviathan Zerg ship?
Ss one anon said they're crashing in a Sliver realm so they do have the local adavantage an also assuming there is one of each Sliver in the "battlefield" pic related happens.
There's no way of destroying them if they can just return to the library (Pulmonic Sliver) or hand (Harmonic Sliver) or just flicker (Frenetic Sliver), besides being indestructible, can regenerate, etc. We're talking that each Sliver would be ~100/100 that can even sacrifice itself for the Hive or Queen.
And obviously nobody cares about neoslivers.
In order to be a fair fight the three armies should be at their prime.