Whats got you all bent out of shape? Joseph, comedian, last words Illustrated by Miranda Meeks Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
they are both uncommons, so they work as Pauper commanders
This Alternate Art variation swaps out standard battle poses for an incredibly moody, stylized character portrait that perfectly captures his lazy, manipulative malevolence

Accomplished Automaton Aether Chaser Aether Herder Aether Inspector Aether Poisoner Aether Swooper Age of Ultron Ambitious Aetherborn Ancient Stone Idol Animation Module Architect of the Untamed Ashnod, Flesh Mechanist Aspiring Aeronaut Assembled Ensemble Automated Assembly Line Auxiliary Boosters Aviation Pioneer Barbed Spike Barracks of the Thousand Basalt Golem Baxter Stockman Biomechan Engineer Biotransference Blade Splicer Blink Bottle of Suleiman Boulder Jockey (playtest) Breya's Apprentice Broadcast Rambler Brudiclad, Telchor Engineer By Gnome Means Camera Launcher Canoptek Scarab Swarm Castle Doom Cavalier of Dawn Cayth, Famed Mechanist Chrome Replicator Circuits Act City of the Daleks Clown Car Clown Extruder Clown Extruder Clown Extruder Clown Extruder Clowning Around Cogworker's Puzzleknot Complaints Clerk Conscripted Infantry Conversion Chamber Countless Gears Renegade Crawling Chorus Cult of Skaro Cybernetica Datasmith Dalek Intensive Care Daretti, Ingenious Iconoclast Davros, Dalek Creator Desculpting Blast Detective's Satchel Diamond Kaleidoscope Digsite Engineer Dollmaker's Shop // Porcelain Gallery Dollmaker's Shop // Porcelain Gallery Doomed Artisan Doomsday Confluence Dovin, Grand Arbiter Dyadrine, Synthesis Amalgam Efficient Construction Elegy Acolyte Emergency Weld Envoy of Okinec Ahau Etherium Spinner Eusocial Engineering

This makes the commander cards extremely powerful since youll be able to gain their benefits without paying their mana costs
No, this ability is not cumulative