Those tools are helpful directions and guidelines
The face commander of the Phyrexia: All Will Be One Corrupting Influence precon, Ixhel, Scion of Atraxa, not only gives you major card advantage (up to three extra cards each turn!) but helps deprive your opponent of potential threats
Karplusan Forest
Cards Aether Syphon Amonkhet Raceway Avishkar Raceway Burnout Bashtronaut Deviant Skytech Embalmed Ascendant Endrider Catalyzer Endrider Spikespitter Far Fortune, End Boss Gas Guzzler Gastal Raider Gastal Thrillseeker Glitch Ghost Surveyor Goblin Surveyor Hangarback Assembler Hazoret, Godseeker Highway Reaver Hour of Victory Howlsquad Heavy Kickoff Celebrations Leonin Surveyor Lightwheel Enhancements Loxodon Surveyor Mendicant Core, Guidelight Momentum Breaker Muraganda Raceway Mutant Surveyor Nesting Bot Outpace Oblivion Perilous Snare Point the Way Pride of the Road Racers' Scoreboard Risen Necroregent Rising Chicane Samut, the Driving Force Slick Imitator Smog Smasher Starting Column Streaking Oilgorger Surge of Acclaim Swiftwing Assailant The Speed Demon Tsagan, Raider Warlord Vnwxt, Verbose Host Walking Sarcophagus Zahur, Glory's Past Best Start Your Engines
But again, these are difficult cuts as Circuit Mender does work, and these upgrades are more fine tuning these decks
As we noted when talking about Atraxa, Praetors Voice, this ability offers incredibly potent consistency
