Orthion, Hero of Lavabrink + Umbral Mantle + Su-Chi Cave Guard + Phyrexian Altar

Orthion, Hero of Lavabrink

Umbral Mantle

Su-Chi Cave Guard

Phyrexian Altar

How it works

1. Activate Orthion's first ability by paying 1 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 triggers, adding eight C.
4. Activate Orthion by paying 3 and untapping it, giving it +2/+2 until end of turn.
5. Repeat.
6. Optionally, if you have an additional available, you may use Orthion's second ability once you have a large amount of C to get infinite , which can then be used to activate Orthion infinitely targeting any other creature(s).

This loop relies on the clever synergy between Orthion, Hero of Lavabrink and Su-Chi Cave Guard, utilizing Umbral Mantle to fuel an endless sequence. By using Orthion's first ability to copy Su-Chi Cave Guard, you set up a tragic loop where sacrificing the token to Phyrexian Altar generates a red mana and triggers the cave guard's death ability, yielding a massive influx of colorless mana. You then channel that surplus into Umbral Mantle to untap Orthion with enough mana left over to repeat the process. With the engine fully self-sustaining, you can eventually transition into Orthion's massive second ability to multiply your board state exponentially and generate infinite colored mana.