Myojin of Life's Web and Cloudstone Curio on the battlefield.
Myojin of Life's Web has at least two indestructible counters on it.
You have at least one other nonartifact creature card in hand.
Steps
Activate Myojin of Life's Web by removing an indestructible counter from it, putting Contagious Vorrac and another nonartifact creature from your hand onto the battlefield.
When Contagious Vorrac and the additional creature enter the battlefield, Contagious Vorrac triggers once and Cloudstone Curio triggers twice.
Resolve the Contagious Vorrac trigger, revealing the top four cards of your library and putting them on the bottom of your library, then putting an indestructible counter on Myojin of Life's Web.
Resolve both Cloudstone Curio triggers, returning Contagious Vorrac and the additional creature to your hand from the battlefield.