Abandoned Sarcophagus + Overwhelming Splendor + Hollow One + Ashnod's Altar

Abandoned Sarcophagus

Overwhelming Splendor

Hollow One

Ashnod's Altar

How it works

1. Cast Hollow One either from your hand or from your graveyard by paying at most 1.
2. Activate Ashnod's Altar by sacrificing Hollow One, adding CC.
3. If you cast Hollow One from your graveyard, Hollow One is not exiled by Abandoned Sarcophagus due to Overwhelming Splendor removing Hollow One's cycling ability.
4. Repeat.

This fascinating loop relies on the curious interaction between Abandoned Sarcophagus, Overwhelming Splendor, and Hollow One to generate an infinite engine. Normally, casting Hollow One from your graveyard via Abandoned Sarcophagus would trigger a replacement effect that exiles it if it isn't cycled, but since Overwhelming Splendor strips away all of the creature's abilities upon entering the battlefield—including its built-in cycling ability—that exile clause is bypassed entirely. This allows you to continually cast Hollow One for cheap, sacrifice it to Ashnod's Altar for colorless mana, and loop it right back out of the graveyard to fund the process indefinitely.