Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Flying
At the beginning of your end step, each opponent discards a card.
{1}{B}, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.
If one or more counters would be put on an artifact or creature you control, that many plus one of each of those kinds of counters are put on that ...
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{T}: Add {C}. {T}, Pay 1 life: Add one mana of any color. Activate this ability only if you control an artifact.
At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.
[+1]: Create a colorless artifact token named Etherium Cell with "{T}, Sacrifice this artifact: Add one mana of any color." [−2]: Target creature g...
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Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in yo...
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