Arcbound Reclaimer + Showdown of the Skalds + Delif's Cone + Magus of the Future

Arcbound Reclaimer

Showdown of the Skalds

Delif's Cone

Magus of the Future

How it works

1. Cast Delif's Cone either from your hand or from the top of your library by paying 0
2. Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
3. Activate Delif's Cone by tapping and sacrificing it.
4. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Delif's Cone from your graveyard onto the top of your library.
5. Repeat.

This clever loop turns a modest artifact into an endless engine by leveraging Magus of the Future, which lets you cast Delif's Cone directly from the top of your library for zero mana. Each time you cast the Cone, Showdown of the Skalds triggers its second and third chapters to place a +1/+1 counter on Arcbound Reclaimer. You can then spend that very counter to activate Arcbound Reclaimer's ability, recycling the sacrificed Delif's Cone right back to the top of your library to do it all over again.