Activate Emry by tapping it, allowing you to cast Dark Sphere from your graveyard.
Cast Dark Sphere by paying 0.
Displacer Kitten triggers, blinking Emry.
When Emry enters, it triggers, causing you to mill four cards.
Activate Dark Sphere by tapping and sacrificing it.
Repeat.
This clever loop puts Emry, Lurker of the Loch to work as an artifact-recycling engine, using her tap ability to continually pull Dark Sphere right back out of your graveyard for recast. Every time you cast that zero-mana artifact, Displacer Kitten triggers its Avoidance ability to blink Emry, letting her fresh entry mill four cards deeper into your deck while seamlessly resetting her tapped status. Meanwhile, Samut, Voice of Dissent sits ready with her active untap capability, ensuring Emry can always get back to work regardless of summoning sickness or prior exhaustion.