Toph, the First Metalbender + Haru, Hidden Talent + Stonework Puma + Phyrexian Altar

Toph, the First Metalbender

Haru, Hidden Talent

Stonework Puma

Phyrexian Altar

How it works

1. Cast Stonework Puma by paying 3.
2. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph.
3. Activate Phyrexian Altar by sacrificing Stonework Puma.
4. When Stonework Puma dies, Haru triggers, returning Stonework Puma from your graveyard to the battlefield tapped.
5. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph.
6. Repeat from step 3.

This clever loop turns your nontoken artifacts into lands thanks to Toph, the First Metalbender, transforming what would normally be regular spell casts into continuous land drops and creatures. Stonework Puma enters the battlefield as an Ally, triggering Haru, Hidden Talent to earthbend it into a land-creature, which can then be immediately fed to Phyrexian Altar for any color of mana. Because Stonework Puma's earthbent land status ensures it returns to the battlefield tapped when it dies, it effortlessly triggers Haru, Hidden Talent all over again to restart the cycle, generating an endless stream of sacrifice and landfall triggers alongside infinite colored mana.