honestly really weird if you think about it.
A Killer Among Us Ainok Strike Leader Ardoz, Cobbler of War Battle Cry Goblin Blast from the Past Boggart Mob Chancellor of the Forge Charforger Chimney Rabble Churning Reservoir Corsairs of Umbar Den of the Bugbear Elder Auntie Fable of the Mirror-Breaker General Kreat, the Boltbringer Goblin Assault Goblin Instigator Goblin Morningstar Goblin Rabblemaster Goblin Spymaster Goblin Traprunner Goblinslide Hold the Perimeter Howlsquad Heavy Krenko, Baron of Tin Street Legion Warboss Lost Mine of Phandelver Mardu Ascendancy Mogg War Marshal Rakdos Guildmage Rasputin, the Oneiromancer Relic Robber Rulik Mons, Warren Chief Sarpadian Empires, Vol
It can be a significant source of cost reduction, especially considering most discounts like Goblin Electromancer and Thunderclap Drake only reduce costs by one
C Common Fiendish Rhino Warrior X EARTH Level 3 [ FiendEffect ] ATK 1400 DEF 900 Fiend monsters you control, except "Fiendish Rhino Warrior", cannot be destroyed by battle or card effects
Honorable Mention Hashaton, Scarab's Fist Let's start with this two-drop blocking 1/3 size guy for Orzhov mana, and then when you discard that dork you can spend three mana one of which is Blue to make a tapped token copy of it at 4/4 size and a Zombie too