After that I think you know how to use the blue planeswalker to find your combo pieces, and get extra use out of your artifacts
The standouts, at least for us, are probably Science
Sliver is an old and beloved creature type, and they're one of the quintessential typal creatures
So in typical fashion after a couple of wins in a row....I mull to 6 and drew a garbage 2 mana do nothing hand but I don't want to mull to 5 with 19 land deck
Focus on getting tutors like Jim Hawkins, or discard recursion like I Won't Give In should be more important than keeping an otherwise milquetoast Pirate like Owl just for the sake of having one in your hand
Kalemne otherwise sees lots of play in the 99 of other Commanders that care about Experience Counters like Kelsein, the Plague and Azlask, the Swelling Scourge