Feldon of the Third Path + Thornbite Staff + Su-Chi Cave Guard + Phyrexian Altar

Feldon of the Third Path

Thornbite Staff

Su-Chi Cave Guard

Phyrexian Altar

How it works

1. Activate Feldon of the Third Path by paying 2 and tapping it, creating a token copy of Su-Chi Cave Guard with haste.
2. Activate Phyrexian Altar by sacrificing the Su-Chi Cave Guard token, adding .
3. When the Su-Chi Cave Guard token dies, it and Feldon of the Third Path trigger.
4. Resolve the Feldon of the Third Path trigger, untapping it.
5. Resolve the Su-Chi Cave Guard trigger, adding eight C.
6. Repeat.

This ingenious loop centers around Feldon of the Third Path, who uses his graveyard-copying ability to repeatedly summon Su-Chi Cave Guard back to the battlefield. Because Su-Chi Cave Guard is a construct that yields a massive eight generic mana when it dies, sacrificing it to Phyrexian Altar immediately fuels the next activation cost while effortlessly generating infinite colorless mana and death triggers. Meanwhile, Thornbite Staff is equipped to keep Feldon of the Third Path permanently untapping whenever the cave guard perishes, ensuring the assembly line never has to stop.