Vhal, Candlekeep Researcher + Haunted One + Faces of the Past + Sage of Hours + Phyrexian Altar

Vhal, Candlekeep Researcher

Haunted One

Faces of the Past

Sage of Hours

Phyrexian Altar

How it works

1. Activate Vhal by tapping it, adding an amount of C equal to Vhal's toughness that cannot be spent to cast spells from your hand.
2. Haunted One triggers, causing Humans and Wizards you control to get +2/+0 and to gain undying until end of turn.
3. Activate Sage of Hours by removing all +1/+1 counters from it.
4. Activate Phyrexian Altar by sacrificing Sage of Hours, adding one mana of any color.
5. When Sage of Hours dies, its undying ability and Faces of the Past trigger.
6. Resolve the Sage of Hours trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. Resolve the Faces of the Past trigger, untapping all Humans and Wizards.
8. Repeat.

This intricate engine relies on Vhal, Candlekeep Researcher and Haunted One to transform a simple sacrifice into an infinite loop of extra turns and mana. By tapping Vhal, you generate restricted colorless mana while Haunted One grants your shared-type creatures undying whenever they tap. You then cash out Sage of Hours to Phyrexian Altar for colored mana after stripping its counters for extra turns. When Sage of Hours dies, Faces of the Past triggers to untap your board, letting you repeat the whole cycle endlessly.