You can easily use Special Summon and GY Fertilize, and since you can search with Primeval Planet Perlereino, Pressured Planet Wraitsothand Kashtira Fenrir, you can bring them into another Deck
Restricting yourself to only machines IS a lot more restrictive, definitely, as there aren't too many Machines Links
and in 9, it's Salamander.) My first Final Fantasy experience was with this 8, which I played on a friend's original PlayStation

Sample Decklist Click to view the TCG decklist in the Official Card Database Spoiler TCG List as of 1/30/2020: (See Future Adjustments Section for changes including probable new cards as of 3/20/2020) Monsters: 24 ||| Crimson Nova the Dark Cubic Lord ||| Duza the Meteor Cubic Vessel ||| Vijam the Cubic Seed | Giera Guile the Cubic King | Indiora, Doom Volt of the Cubic Emperor ||| Magicians Soul || Perfomage Stilts Launcher || Performage Damage Juggler || Performage Hat Tricker | Performage Trick Clown ||| Speedburst Dragon Spells: 13 ||| Cubic Karma ||| Cubic Wave | Foolish Burial ||| Foolish Burial Goods || Pot of Desires | Monster Reborn Traps: 3 ||| Unification of the Cubic Lords Extra: | Gagaga Cowboy | Number 41: Bagooska the Terribly Tired Tapir | Performage Trapeze Magician | Borreload Dragon | Borrelsword Dragon | I:P Masquerena | Knightmare Cerberus | Knightmare Phoenix | Knightmare Unicorn || Linkuriboh | Mekk-Knight Crusadia Avramax | PSY-Framelord Lambda | Topologic Bomber Dragon | Underclock Taker Foolish, Foolish, Foolish, Foolish, Desires As a streamlined OTK variant, this build is all about getting to the cards you need as reliably as possible

I imagine this fun visual style will drive prices of individual cards into the triple digits