Requires

Ulvenwald Mysteries must be on the battlefield. Angelic Sleuth must be on the battlefield. Ashnod's Altar must be on the battlefield. Cathars' Crusade must be on the battlefield. You control a Clue. Mana needed:

Steps

1. Activate a Clue by paying and sacrificing it.
2. Ulvenwald Mysteries' second ability triggers, creating a 1/1 Human Soldier creature token.
3. The Human Soldier enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control.
4. Resolve the Clue ability from step 1, causing you to draw a card.
5. Activate Ashnod's Altar by sacrificing the Human Soldier, adding .
6. The Human Soldier leaves the battlefield, triggering Angelic Sleuth, creating a Clue token.
7. Repeat.

Results