Cast Anikthea from your hand or from the command zone by paying 2 plus commander tax, if applicable.
When Anikthea enters the battlefield, it and Life Finds a Way trigger.
Resolve the Anikthea trigger, exiling Oblivion Ring from your graveyard and creating two token copies of it that are 3/3 Zombies.
When the Oblivion Ring tokens enter the battlefield, their first abilities trigger.
Resolve the first Oblivion Ring trigger, exiling Anikthea until the Oblivion Ring token leaves the battlefield.
Resolve the second Oblivion Ring trigger, exiling the first Oblivion Ring token.
When the first Oblivion Ring token is exiled, Anikthea returns to the battlefield from exile.
When Anikthea enters the battlefield, it and Life Finds a Way trigger.
Resolve the Anikthea trigger, choosing not to exile anything.
Resolve the Life Finds a Way trigger, creating two token copies of the Oblivion Ring token.
Repeat from step 4.
This clever loop spins up an endless supply of Zombie tokens by leveraging Anikthea, Hand of Erebos to repeatedly resurrect Oblivion Ring as a 3/3 creature from your graveyard. As the Oblivion Ring tokens enter, they temporarily exile Anikthea and each other, setting up a perpetual dance of leaving and entering the battlefield that constantly triggers Life Finds a Way. Doubling Season amplifies every token-creation effect along the way, turning each iteration of the loop into a cascading avalanche of copies and guaranteeing an infinite army of creatures.