Call to Glory in exile (exiled by Isochron Scepter).
Isochron Scepter and Toymaker on the battlefield.
You control creatures that can tap to produce at least ({3} magic symbol) .
You have at least one card in hand.
Toymaker does not have summoning sickness.
({1} magic symbol) available.
Steps
Activate Toymaker's first ability by paying ({1} magic symbol) , tapping it and discarding a card, causing Isochron Scepter to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding ({3} magic symbol) .
Activate Isochron Scepter by paying ({2} magic symbol) and tapping it, casting a copy of Call to Glory without paying its mana cost, untapping all creatures.