Or you can check out my last video showing off my personal filler collection (Its not complete although I have picked up several super rare fillers since!)

$0.49 Helitrooper (0106 - Extended Art) Final Fantasy Commander Decks Variants $0.69 Summoning Materia (0124 - Extended Art) Final Fantasy Commander Decks Variants $2.79 Ultimate Magic: Holy (0110 - Extended Art) Final Fantasy Commander Decks Variants $0.69 Ultimate Magic: Meteor (0121 - Extended Art) Final Fantasy Commander Decks Variants $0.59 Yuna's Decision (0125 - Extended Art) Final Fantasy Commander Decks Variants $4.99 Sephiroth, Fallen Hero (0182 - Extended Art) Final Fantasy Commander Decks Variants $2.99 Lifestream's Blessing (0122 - Extended Art) Final Fantasy Commander Decks Variants $1.49 Elena, Turk Recruit (0133 - Extended Art) Final Fantasy Commander Decks Variants $1.29 Protection Magic (0107 - Extended Art) Final Fantasy Commander Decks Variants $0.79 SOLDIER Military Program (0108 - Extended Art) Final Fantasy Commander Decks Variants $2.99 Cid, Freeflier Pilot (0131 - Extended Art) Final Fantasy Commander Decks Variants $1.99 Dancer's Chakrams (0105 - Extended Art) Final Fantasy Commander Decks Variants 0 results found

Like with all things, though, whether or not you can use a card is up to you and your opponent
If I assemble more than one Contraption at the same time, do I have to put them on the same sprocket
We already play Firebrand Archer in EDH decks that buff damage, and some of those commanders are in Standard, like Ojer Axonil, Deepest Might / Temple of Power, Ob Nixilis, Captive Kingpin, Urabrask / The Great Work, Taii Wakeen, Perfect Shot, Judith, Carnage Connoisseur, and Imodane, the Pyrohammer