Scrap Trawler, Krark-Clan Ironworks, Salvaging Station, and Stonecoil Serpent

Prerequisites

• Scrap Trawler on the battlefield
• Krark-Clan Ironworks on the battlefield
• Salvaging Station on the battlefield
• Stonecoil Serpent in the graveyard
• You control a nontoken noncreature artifact with mana value one or less

Steps

1. Activate Krark-Clan Ironworks by sacrificing the nontoken noncreature artifact, adding
2. Scrap Trawler triggers, returning Stonecoil Serpent from your graveyard to your hand
3. Activate Salvaging Station by tapping it, returning the noncreature artifact from your graveyard to the battlefield
4. Cast Stonecoil Serpent by paying
5. Stonecoil Serpent enters the battlefield and dies as a state-based action due to having zero toughness
6. Scrap Trawler and Salvaging Station trigger
7. Resolve the Salvaging Station trigger, untapping itself
8. Resolve the Scrap Trawler trigger, returning nothing from your graveyard to your hand
9. Repeat

Results

• Infinite +1/+1 counters on Stonecoil Serpent
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count