Kenrith, the Returned King + Ashnod's Altar + Biomancer's Familiar + Prismite + Orzhov Enforcer
Kenrith, the Returned King
Ashnod's Altar
Biomancer's Familiar
Prismite
Orzhov Enforcer
Infinite card draw for any number of playersInfinite colored manaInfinite colorless manaInfinite death triggersInfinite draw triggers for any number of playersInfinite creature ETBInfinite lifegainInfinite lifegain triggersInfinite creature LTBInfinite creature sacrifice triggersReturn all creature cards from all graveyards to the battlefield under your controlInfinite draw triggers for any number of opponentsInfinite +1/+1 counters on creatures you control
How it works
Activate Ashnod's Altar by sacrificing Orzhov Enforcer, adding CC.
When Orzhov Enforcer dies, its afterlife ability triggers, creating a 1/1 Spirit creature token.
Activate Ashnod's Altar by sacrificing the Spirit, adding CC.
Activate Prismite by paying 1, adding .
Activate Kenrith's fifth ability by paying 2, returning Orzhov Enforcer to the battlefield from your graveyard.
Repeat.
Once you have infinite mana, you may use it to activate Kenrith's other abilities.
This brilliant loop relies on Kenrith, the Returned King to continuously reanimate Orzhov Enforcer from the graveyard for a discounted rate, while Ashnod's Altar and Prismite work together to launder your mana and fuel the recursion. Whenever Orzhov Enforcer dies, its afterlife ability leaves behind a Spirit token that you can immediately sacrifice to the Altar for more colorless energy. Biomancer's Familiar plays a crucial role by reducing the activation costs of Kenrith's abilities, making this infinite loop possible and leaving you with boundless resources to leverage Kenrith's remaining activated abilities for the win.