Mirror Entity and Whisperer of the Wilds on the battlefield.
Whisperer of the Wilds does not have summoning sickness.
You control a creature with power 4 or greater who has at least a +3/+3 boost from secondary effects.
Steps
Activate Whisperer of the Wilds by tapping it, adding ({G} magic symbol) ({G} magic symbol) .
Cast Wirewood Symbiote by paying ({G} magic symbol) .
Activate Mirror Entity by paying ({1} magic symbol) , giving creatures you control all creature types and base power and toughness 1/1 until end of turn.
Activate Wirewood Symbiote by returning it from the battlefield to your hand, untapping Whisperer of the Wilds.