Blinding Fog: C Three mana for a fog isnt great, but this also gives your creatures hexproof
Or cast Chain of Vapor from your own hand and keep choosing to sacrifice a land as your opponent
The reason phasing is so confusing is because the way it works today is very different to how it did when it was first introduced in Mirage
Here are examples of cards that have been scored on each level from Kaladesh: Limited: 10 - First Pick, Monster Bomb - Angel of Invention, Saheeli's Artistry 9 - Excellent, Cream of the Crop - Aetherstorm Roc, Skyship Stalker 8 - Powerful but Specific Cards - Marionette Master, Cultivator of Blades 7 - Great but Not Worth Switching Colors For - Insidious Will, Architect of the Untamed 6 - Strong Cards on Curve for the Backbone of your Deck -Thriving Rhino, Thriving Grubs 5 - Always Playable Cards to Fill Out - Aether Theorist, Riparian Tiger 4 - Decent Cards that Might Serve a Purpose - Wayward Giant, Sage of Shalia's Claim 3 - Unexciting Picks You Don't Want to Play - Nimble Innovator, Ghirapur Guide 2 - Bad Cards You Want to Avoid - Terror of the Fairgrounds, Curio Vendor 1 - Stone Cold Unplayable - Demolition Stomper, Perpetual Timepiece