The Battlefield

Junk Diver

$0.22

Krark-Clan Ironworks

Myr Retriever

Scrap Trawler

Sol Ring

AI DraftFeb 26, 2026

Junk Diver + Krark-Clan Ironworks + Myr Retriever + Scrap Trawler + Sol Ring

Overview

With Krark-Clan Ironworks + Scrap Trawler + Myr Retriever + Sol Ring (Junk Diver is optional for alternate recursion), you can create a repeatable loop that produces net colorless mana each iteration and therefore infinite colorless mana. The loop hinges on sacrificing Myr Retriever to Krark‑Clan Ironworks, using Scrap Trawler’s triggered return (which is limited by the mana value of the artifact that went to the graveyard) to return Sol Ring, then casting and tapping Sol Ring to fund recasting and sacrificial steps; see the Scrap Trawler ruling [2017-02-09] and the Myr Retriever ruling [2020-08-07]. Artifact spells enter the battlefield when they resolve and objects go to the graveyard as described by the graveyard rule .

Step 1

Start with Krark‑Clan Ironworks and Scrap Trawler on the battlefield, Myr Retriever on the battlefield, and Sol Ring in your graveyard; mana pool empty.

Step 2

Activate Krark‑Clan Ironworks by sacrificing Myr Retriever as the activation cost; when the ability resolves it adds {C}

to your mana pool and Myr Retriever is in the graveyard ().

Step 3

When Myr Retriever is put into the graveyard, two triggered abilities are created: Myr Retriever’s own 'when this creature dies, return another target artifact card from your graveyard to your hand' and Scrap Trawler’s 'whenever this creature dies or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser mana value' (use the last battlefield mana value for the comparison) [2017-02-09].

Step 4

Let the appropriate triggered ability resolve so that one of them returns Sol Ring from your graveyard to your hand; the other triggered ability that targeted the same card (if any) will fail on resolution if the card is no longer in the graveyard.

Step 5

Cast Sol Ring from your hand, paying {1}

; when its spell resolves it enters the battlefield under your control .

Step 6

Tap Sol Ring to add {C}

to your mana pool (this is a mana ability and doesn’t use the stack).

Step 7

Use

from Sol Ring (plus any leftover mana from KCI) to cast Myr Retriever for {2}

, returning the game state to Myr on the battlefield and Sol Ring on the battlefield.

Step 8

Activate Krark‑Clan Ironworks again by sacrificing Sol Ring as the activation cost; this adds {C}

to your mana pool and puts Sol Ring into the graveyard ().

Step 9

At the end of that sequence you have Myr Retriever on the battlefield and Sol Ring in the graveyard, and you will have net +3 colorless in your mana pool compared with the start of the cycle; repeat the cycle for arbitrarily large amounts of colorless mana.

Resolution

Short answer: yes — using Krark‑Clan Ironworks + Scrap Trawler + Myr Retriever + Sol Ring you can loop for net +3 colorless per cycle and generate infinite colorless mana. The cycle (one correct ordering) is: activate KCI by sacrificing Myr Retriever to add {C}

; let Scrap Trawler (trigger keyed to Myr's mana value) return Sol Ring from your graveyard to your hand; cast Sol Ring for {1}

and let it enter the battlefield (); tap Sol Ring for {C}

; cast Myr Retriever for {2}

; then sacrifice Sol Ring to KCI for {C}

. After that sequence you are back to Myr on the battlefield and Sol Ring in the graveyard with +3 colorless in your mana pool — repeat for infinite mana. The Scrap Trawler mana‑value restriction applies as explained in the ruling [2017-02-09], and targeting details for Myr Retriever when artifacts die are covered by the ruling [2020-08-07].

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