I don't think Eldrazi Temple is legal in Pioneer :(
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It is a Standard legal list
Haha, if I could I would.
I would add Etched Monstrosity and Hex Parasite (to remove the -1 counters) instead of Rusted Relic and Flayer Husk
Hoard-smelter dragon works well with liquimetal coating but you would add to add another color to put it into this one
Its good but you need a larger variety of mana so you aren't waiting on joiner adept to play your other colored cards.