Gandalf the White | Scrap Trawler | Myr Retriever

(and one other card)

You control a nontoken artifact with mana value one or less that can be cast using only colorless mana.

Activate
Krark-Clan Ironworks twice by sacrificing the nontoken artifact with mana value one or less and
Myr Retriever, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .
When
Myr Retriever dies, its ability triggers twice, returning
Scrap Trawler and the nontoken artifact with mana one or less to your hand from your graveyard.
Cast
Scrap Trawler and the nontoken artifact by paying at most ({4} magic symbol) .
Activate
Krark-Clan Ironworks twice by sacrificing the nontoken artifact and
Scrap Trawler, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .
Scrap Trawler triggers twice for itself dying, and twice for the nontoken artifact.
Resolve the
Scrap Trawler triggers for the nontoken artifact, returning any applicable artifact to your hand from your graveyard.
Resolve the remaining
Scrap Trawler triggers, returning the nontoken artifact and
Myr Retriever to your hand from your graveyard.
Cast the nontoken artifact and
Myr Retriever by paying at most ({3} magic symbol) .
Repeat.