Laboon and Van Augur are the best cost reducers in your list that also pose offensive pressure
The key terminology here is basic Energy, you need to get three different types of basic Energy on the card before you can even attack, locking out shortcuts like Aurora Energy
All that means you might have to get a little creative with your commanders

Advanced Search Sets Random Syntax Release date: 2023-01-31 Against All Odds Annex Sentry Apostle of Invasion Basilica Shepherd Bladed Ambassador Charge of the Mites Compleat Devotion Crawling Chorus Duelist of Deep Faith Elesh Norn, Mother of Machines The Eternal Wanderer Flensing Raptor Goldwarden's Helm Hexgold Hoverwings Incisor Glider Indoctrination Attendant Infested Fleshcutter Jawbone Duelist Kemba, Kha Enduring Leonin Lightbringer Mandible Justiciar Mirran Bardiche Mondrak, Glory Dominus Norn's Wellspring Orthodoxy Enforcer Ossification Phyrexian Vindicator Planar Disruption Plated Onslaught Porcelain Zealot Resistance Reunited Sinew Dancer Skrelv, Defector Mite Skrelv's Hive Swooping Lookout Vanish into Eternity Veil of Assimilation White Sun's Twilight Zealot's Conviction Aspirant's Ascent Atmosphere Surgeon Blade of Shared Souls Blue Sun's Twilight Bring the Ending Chrome Prowler Distorted Curiosity Encroaching Mycosynth Escaped Experiment Experimental Augury Eye of Malcator Font of Progress Gitaxian Anatomist Gitaxian Raptor Glistener Seer Ichor Synthesizer Ichormoon Gauntlet Jace, the Perfected Mind Malcator's Watcher Meldweb Curator Meldweb Strider Mercurial Spelldancer Mesmerizing Dose Mindsplice Apparatus Minor Misstep Prologue to Phyresis Quicksilver Fisher Reject Imperfection Serum Snare Tamiyo's Immobilizer Tamiyo's Logbook Tekuthal, Inquiry Dominus Thrummingbird

The value of X is determined only as Experimental Overload resolves
NAUTILOID SHIP Nautiloid Ship is familiar for anyone who has played the excellent Baldurs Gate 3 , and for those who havent had the pleasure, they might not know what its doing in Magic