Zinnia, Valley's Voice | Cloud of Faeries | Hamza, Guardian of Arashin (and one other card)

Cards

You control at least 2 creatures that each have at least one +1/+1 counter on them.

Cast
Cloud of Faeries with offspring by paying ({1} magic symbol) ({U} magic symbol) using the cost reduction from
Hamza.
When
Cloud of Faeries enters, its own ability and its offspring ability trigger.
Resolve the
Cloud of Faeries abilities, untapping two lands.
Resolve the offspring ability, creating a token copy of
Cloud of Faeries.
When the token copy of
Cloud of Faeries enters, its ability triggers, untapping two lands.
Activate four lands by tapping them, adding ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Shrieking Drake with offspring by paying ({U} magic symbol) , using cost reduction from
Hamza.
When
Shrieking Drake enters, its own ability and its offspring ability trigger.
Resolve the
Shrieking Drake ability, returning the nontoken
Cloud of Faeries to its owner's hand.
Resolve the offspring ability, creating a token copy of
Shrieking Drake.
When the token copy of
Shrieking Drake enters, its ability triggers, returning the nontoken
Shrieking Drake to its owner's hand.
Repeat.

Once infinite mana has been generated, the
Shrieking Drake can return any creature other than
Zinnia to hand to recast infinitely.

This combo has been estimated to be Exhibition (Bracket 1+).