Prerequisites
- Melira, the Living Cure on the battlefield
 - The Peregrine Dynamo on the battlefield
 - Krark-Clan Ironworks on the battlefield
 available
Steps
- Activate Melira by exiling it
 - Holding priority, activate The Peregrine Dynamo by paying 
and tapping it, copying Melira's ability
 - Resolve the copy of Melira's ability, choosing The Peregrine Dynamo
 - Activate Krark-Clan Ironworks by sacrificing The Peregrine Dynamo, adding 
 - Melira triggers, returning The Peregrine Dynamo from your graveyard to the battlefield
 - Repeat from step 2
 
Results
Required Cards 3

Melira, the Living Cure
Legendary Creature — Human Scout

The Peregrine Dynamo
Legendary Artifact Creature — Construct

Krark-Clan Ironworks
Artifact