Inquisitive Puppet in exile (exiled by Agatha's Soul Cauldron).
Agatha's Soul Cauldron and Metallic Mimic on the battlefield.
"Human" chosen with Metallic Mimic.
You control another creature that has at least one +1/+1 counter on it.
Steps
Activate another creature you control that has a +1/+1 counter on it by exiling it, creating a 1/1 Human creature token that enters the battlefield with a +1/+1 counter on it due to Metallic Mimic.