Ashaya, Soul of the Wild | Cloudstone Curio | Seed the Land

(and one other card)

Cast
Kobolds of Kher Keep by paying ({0} magic symbol) .
When
Kobolds of Kher Keep enters the battlefield,
Cloudstone Curio and
Seed the Land trigger.
Resolve the
Cloudstone Curio trigger, choosing to return nothing to your hand.
Resolve the
Seed the Land trigger, creating a 1/1 Snake creature token.
When the Snake enters the battlefield,
Cloudstone Curio triggers, returning
Kobolds of Kher Keep from the battlefield to your hand.
Repeat.