Marwyn, the Nurturer + Eternal Witness + Temur Sabertooth + Emerald Charm
Marwyn, the Nurturer
Eternal Witness
Temur Sabertooth
Emerald Charm
Infinite blinking of some creaturesInfinite creature ETBInfinite green manaInfinite creature LTBInfinite magecraft triggersInfinite mana creatures you control can produceInfinite storm countInfinite untap of creatures you control
How it works
Activate Marwyn by tapping it, adding at least seven .
Cast Emerald Charm by paying , untapping Marwyn.
Activate Temur Sabertooth by paying 1, returning Eternal Witness from the battlefield to your hand.
Cast Eternal Witness by paying 1.
Eternal Witness enters the battlefield, returning Emerald Charm from your graveyard to your hand.