4 Jin-Gitaxias, Progress Tyrant Though notably mana intensive, Jin-Gitaxias, Progress Tyrant is a potent Mono-Blue Phyrexian Praetor that offers a great benefit for its controller while hindering one's opponents
I count: 38 lands and Sam, Loyal Attendant (kind of due to the food activation discount), Birds of Paradise, Gilded Goose, Prize Pig, Tireless Provisioner, Farseek, Cultivate, Sol Ring, Arcane Signet, Chromatic Lantern, Commander's Sphere, Pristine Talisman 50 mana
Omnath really only goes in land decks, and is strictly worse in that deck type than some cards higher on this list
Ive played against it a couple of times in Brawl on MTG Arena, and if you cant deal with Narset before it attacks, it's pretty much game over due to its ability that lets it target non-creature spells from any graveyard, exile them, and cast a copy for free
Nonetheless, we all get the idea)
Smugglers Surprise Smuggler's Surprise is almost an obligatory add to this list, even if the main aim is not hexproof