Ambusher lets you pass over your turn without giving up a meaningful play, rewards you for doing so on subsequent turns, and even pumps all your wolvid creatures!
Svyelun of Sea and Sky will be a key part of Modern merfolk if that ever happens
After the first turn, Search for Tomorrow is generally worse than other options, which makes drawing multiple bad and makes drawing it in hands that need to use Arcums Astrolabe for green bad, so Ive gone down to one, since it is the best first-turn play if you have it, and Im also playing one Sakura-Tribe Elder, one Cultivate, and one Kodamas Reach
But Urza and friends seem very well equipped to bring back that traditional blue/white playstyle, combining seamlessly with the various, slower Wandering Emperor White decks already in Standard
4 Quickbeast Amulet Wear It Proudly Intensity is a rather unique mechanic that grows over the course of the game depending on different factors