Prerequisites
- Emry, Lurker of the Loch on the battlefield
 - Krark-Clan Ironworks on the battlefield
 - Ichor Wellspring on the battlefield
 - Mirran Spy on the battlefield
 
Steps
- Activate Krark-Clan Ironworks by sacrificing Ichor Wellspring, adding 
 - Ichor Wellspring triggers, drawing a card
 - Activate Emry by tapping it, targeting Ichor Wellspring
 - Cast Ichor Wellspring from your graveyard by paying 
 - Ichor Wellspring enters the battlefield, drawing a card
 - Mirran Spy triggers, untapping Emry
 - Repeat
 
Results
Required Cards 4

Emry, Lurker of the Loch
Legendary Creature — Merfolk Wizard

Krark-Clan Ironworks
Artifact

Ichor Wellspring
Artifact

Mirran Spy
Creature — Drone