Siani, Eye of the Storm Partner makes almost any creature better
They can't be the targets of spells or abilities, their static abilities have no effect on the game, their triggered abilities can't trigger, they can't attack or block, and so on
It's here as a novelty, not as a power entry
Shelob, Child of Ungoliant is one of those cards you see in every MTG set and immediately think "yep, that was made for Commander"
Pit-Rack: I felt relatively good about this matchup given all the flashback cards and Sylvan Libraries
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Falthis, Shadowcat Familiar: If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities