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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At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.
Return up to three target artifacts and/or creatures to their owners' hands. You may cast a card with converted mana cost 4 or less from your hand ...
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Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
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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