Requires

Perilous Forays must be on the battlefield. Felidar Retreat must be on the battlefield. Archelos, Lagoon Mystic must be on the battlefield. You control at least one additional creature. Mana needed:

Steps

1. Activate Perilous Forays by paying and sacrificing a creature you control, searching your library for a land card with a basic land type and putting it on the battlefield untapped due to Archelos.
2. When the land enters the battlefield, Felidar Retreat triggers, creating a creature token.
3. Activate the land by tapping it, adding .
4. Repeat.

Results