Nice advice you two. I made some adjustments to the deck.
It started off as a quick build and I saved it not expecting any comments. I only used cards I owned, planning on expanding from there. Your ideas have given me a
jump start.
I kept
Grapple with the Past, because I like the later game option of recovering key slivers from the 'yard.
I tested this new version for a couple of matches and the slowest game win was 5 turns out of 4 games. NICE!
Next adjustments will likely remove the counters or put them in the sideboard as I have more aggressive things to do early game. I would prefer bounce to keep the swarm rolling.
Now I have to go and purchase some slivers so i can build this deck IRL.