Denethor, Ruling Steward Denethor, Ruling Steward is an aristocrats commander that continues to create more creatures to sacrifice each turn
Its best when paired with cards like Falco Spara, Pactweaver or Good-Fortune Unicorn that can let you persist it over and over
Blue is the absolute best at copying creatures or artifacts, but despite being heavily instant and sorcery focused, cant copy those with a great efficiency
Magic, however, has older game pieces with strong play demand and Reserved List scarcity
There are many ways to abuse this, but it's one of the best examples of what I call my WALD theory that puts game-changing cards into three categories: Wrath of God - These are massive cards that you cast when you are behind, and then they bring you back to a neutral state, just like Wrath of God does when you are losing the creature battle