Activate Emry by tapping it, allowing you to cast Lion's Eye Diamond from your graveyard.
Cast Lion's Eye Diamond by paying 0.
Displacer Kitten triggers, blinking Emry.
When Emry enters, it triggers, causing you to mill four cards.
Activate Lion's Eye Diamond by discarding your hand and sacrificing it.
Repeat.
This brilliant loop harnesses Emry, Lurker of the Loch as an infinite recursion engine, using her tap ability to continually pull Lion's Eye Diamond straight out of your graveyard. Every time you recast that zero-mana artifact, Displacer Kitten triggers its Avoidance ability to blink Emry, wiping away summoning sickness—a requirement easily maintained thanks to Concordant Crossroads giving all your creatures haste right from the start. Sacrificing Lion's Eye Diamond in response generates the mana needed to fuel the cycle while repeating the process to mill your entire deck and amass limitless resources.