This card is particularly situational, and not that great when the situation comes around, but its one of the oldest humble-adjacent effects in the game, and I feel like I could write an entire D&D campaign based on that flavor text
You dont have too much room to cut in the main list since this deck is already fairly budget, so lands start to lose their value

Ashcloud Phoenix Aven Cloudchaser Cinder Cloud Cloud Cover Cloud Crusader Cloud Djinn Cloud Dragon Cloud Elemental Cloud Key Cloud Manta Cloud Pirates Cloud Spirit Cloud Sprite Cloud of Darkness Cloud of Faeries Cloud's Limit Break Cloud, Ex-SOLDIER Cloud, Midgar Mercenary Cloud, Planet's Champion Cloudblazer Cloudbound Moogle Cloudchaser Eagle Cloudchaser Kestrel Cloudcrest Lake Cloudcrown Oak Cloudfin Raptor Cloudform Cloudgoat Ranger Cloudheath Drake Cloudhoof Kirin Cloudkill Cloudkin Seer Cloudpiercer Cloudpost Cloudreach Cavalry Cloudreader Sphinx Cloudsculpt Technician Cloudseeder Cloudshift Cloudshredder Sliver Cloudskate Cloudspire Captain Cloudspire Coordinator Cloudspire Skycycle Cloudsteel Kirin Cloudstone Curio Cloudthresher Death Cloud Hypnotic Cloud Krosan Cloudscraper Lifted by Clouds Lightning Cloud Meloku the Clouded Mirror Najeela, the Blade-Blossom Nyxbloom Ancient Oboro, Palace in the Clouds Oltec Cloud Guard Pride of the Clouds Riftwing Cloudskate Sea of Clouds Shepherd of the Clouds Skycloud Egg Skycloud Expanse Soratami Cloud Chariot Soratami Cloudskater Spore Cloud Stormcloud Djinn Stormcloud Spirit The Western Cloud Thundercloud Elemental Thundercloud Shaman Untaidake, the Cloud Keeper

This is where Baleful Mastery being your turn 2 play comes in handy
Exile any number of target spells
I felt casting spells worked well because it's a natural part of the game, which made it easy to blend in and allow the player to fill in the moon flavor