Emerald Charm in exile (exiled by Isochron Scepter).
All permanents on the battlefield.
Steps
Activate Lotus Field by tapping it, adding three mana of any color.
Activate Isochron Scepter by paying ({2} magic symbol) and tapping it, casting a copy of Emerald Charm without paying its mana cost, targeting Isochron Scepter.
Swarm Intelligence triggers, creating a copy of Emerald Charm, targeting Lotus Field.
Resolve both Emerald Charms, untapping Isochron Scepter and Lotus Field.