AI DraftFeb 26, 2026
Jhoira's Familiar + Krark-Clan Ironworks + Myr Retriever + Scrap Trawler
Overview
With Jhoira's Familiar, Krark‑Clan Ironworks, Myr Retriever, and Scrap Trawler on the battlefield you can sacrifice artifacts to Krark‑Clan Ironworks for 
, and death triggers from Myr Retriever and Scrap Trawler will try to return artifacts to your hand. Jhoira's Familiar reduces the mana cost of historic spells you cast by 
, but it does not reduce its own cost while you are casting it [Ruling 2020-08-07]. The limits on what Scrap Trawler can return use the mana value the sacrificed artifact had as it last existed on the battlefield [Ruling 2017-02-09], and Myr Retriever can target an artifact that died at the same time as it did [Ruling 2020-08-07].
, and death triggers from Myr Retriever and Scrap Trawler will try to return artifacts to your hand. Jhoira's Familiar reduces the mana cost of historic spells you cast by , but it does not reduce its own cost while you are casting it [Ruling 2020-08-07]. The limits on what Scrap Trawler can return use the mana value the sacrificed artifact had as it last existed on the battlefield [Ruling 2017-02-09], and Myr Retriever can target an artifact that died at the same time as it did [Ruling 2020-08-07].Step 1
Start with Krark‑Clan Ironworks, Scrap Trawler, Myr Retriever, and Jhoira's Familiar on the battlefield under your control (Familiar applies a cost reduction of to historic spells you cast, which includes artifacts).
to historic spells you cast, which includes artifacts).Step 2
Activate Krark‑Clan Ironworks’s ability and sacrifice Myr Retriever as the cost (Sacrifice an artifact: Add ). The sacrificed Myr Retriever is put into your graveyard; Krark resolves and you get .
). The sacrificed Myr Retriever is put into your graveyard; Krark resolves and you get .Step 3
Myr Retriever’s triggered ability triggers 'When this creature dies, return another target artifact card from your graveyard to your hand.' It is put on the stack. Note: it must target another artifact card in your graveyard, so it cannot target itself [Ruling 2020-08-07].
Step 4
Scrap Trawler sees 'another artifact you control is put into a graveyard from the battlefield' (the Myr Retriever) and triggers. Its trigger can target an artifact card in your graveyard with lesser mana value than the artifact that caused the trigger (use the sacrified artifact’s last‑known mana value) [Ruling 2017-02-09]. Myr Retriever had mana value 2, so Scrap Trawler can only return an artifact card with mana value < 2 (i.e., 0 or 1) from your graveyard.
Step 5
If you have no artifact cards in your graveyard with mana value less than the sacrificed artifact’s mana value, Scrap Trawler’s trigger will have no legal target and will do nothing.
Step 6
If Scrap Trawler instead is the artifact you sacrificed to Krark‑Clan Ironworks (sacrifice the Trawler), you get and Scrap Trawler’s death trigger can return an artifact card from your graveyard with mana value less than 3 (Scrap Trawler’s mana value) — that includes Myr Retriever (mana value 2). If Myr Retriever is returned, you can cast it (its cost is 
, reduced by Jhoira's Familiar by when you cast it) and then sacrifice it to Ironworks on a later activation to generate more .
and Scrap Trawler’s death trigger can return an artifact card from your graveyard with mana value less than 3 (Scrap Trawler’s mana value) — that includes Myr Retriever (mana value 2). If Myr Retriever is returned, you can cast it (its cost is , reduced by Jhoira's Familiar by when you cast it) and then sacrifice it to Ironworks on a later activation to generate more .Step 7
Myr Retriever’s death trigger can return another target artifact card in your graveyard when it dies; if Retriever and some other artifact died simultaneously, Retriever can target that other artifact card [Ruling 2020-08-07].
Step 8
Because Scrap Trawler only returns artifacts of strictly lesser mana value than the artifact that triggered it [Ruling 2017-02-09], and Myr Retriever can only return another artifact (not itself) unless they died simultaneously [Ruling 2020-08-07], there is no inherent way with only these four cards to continually return and resacrifice the same two artifacts to net positive mana and loop infinitely.
Resolution
With only these four cards you cannot create an infinite, self-sustaining loop. You can sacrifice either Myr Retriever or Scrap Trawler to Krark‑Clan Ironworks to produce and get one or more artifacts back to your hand via their triggered abilities, but Scrap Trawler can only return an artifact with strictly lesser mana value than the artifact that went to the graveyard to cause its trigger [Ruling 2017-02-09], and Myr Retriever can only return a different artifact card from the graveyard when it dies (it can target another artifact that died simultaneously) [Ruling 2020-08-07]. Jhoira's Familiar reduces casting costs of artifacts you cast by (historic spells), which helps recasting returned artifacts, but it does not change a spell’s locked-in total cost after casting choices are made and doesn’t reduce its own cost while you are casting it [Ruling 2020-08-07].
and get one or more artifacts back to your hand via their triggered abilities, but Scrap Trawler can only return an artifact with strictly lesser mana value than the artifact that went to the graveyard to cause its trigger [Ruling 2017-02-09], and Myr Retriever can only return a different artifact card from the graveyard when it dies (it can target another artifact that died simultaneously) [Ruling 2020-08-07]. Jhoira's Familiar reduces casting costs of artifacts you cast by (historic spells), which helps recasting returned artifacts, but it does not change a spell’s locked-in total cost after casting choices are made and doesn’t reduce its own cost while you are casting it [Ruling 2020-08-07].Feedback