Arcbound Reclaimer + Showdown of the Skalds + Jeweled Lotus + Experimental Frenzy

Arcbound Reclaimer

Showdown of the Skalds

Jeweled Lotus

Experimental Frenzy

How it works

1. Cast Jeweled Lotus 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 Jeweled Lotus by tapping and sacrificing it.
4. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Jeweled Lotus from your graveyard onto the top of your library.
5. Repeat.

This loop turns the top of your library into an endless engine by leveraging Experimental Frenzy, which lets you cast Jeweled Lotus directly from the top. Every time you cast the Lotus, Showdown of the Skalds triggers its II or III ability to place a fresh +1/+1 counter back onto Arcbound Reclaimer. You then sacrifice the Lotus for commander mana and use that newly placed counter to activate Arcbound Reclaimer, recycling the Lotus right back to the top of your library to repeat the process.