Path to victory in 1 turn.
REQUIREMENTS
Arcum Dagsson (Arcum) on the field, ready to tap, one artifact creature on the board and one in hand, and mana to cast it.

Note: Once paradox engine sticks, before any cast, tap all of your mana rocks.

STEPS
1. Tap arcum, sacrifice the artifact creature to cheat paradox engine into play.
2. Cast artifact creature in hand. Paradox engine triggers, untapping all permanents.
3. Tap arcum again, sacrificing that creature, cheating citanul flute (flute) into play.
4. For X=0, tap flute, and add one of the 0 drop artifact creatures to hand.
5. Cast that creature. Paradox engine triggers, untapping all permanents.
6. Tap arcum, sacrifice that creature, searching for a mana rock to cheat into play.
7. Repeat steps 4, 5, and 6. You should be able to produce at least 4 mana with your mana rocks alone.
8. For X=3, tap flute to tutor for junk diver.
9. Cast junk diver. Paradox engine triggers, untapping all permanents.
10. Tap arcum, sacrifice junk diver. 2 triggers on the stack, order does not matter. Junk diver returns one of your previously sacrificed 0 drop creatures to your hand. Arcum cheats any noncreature artifact you prefer OR you choose none from the deck.
11. For X=2, tap flute to utor for Myr Retriever.
12. Cast Myr Retriever. Paradox engine triggers to untap all permanents.
13. Tap arcum, sacrifice myr retriever. Two triggers again. Retriever brings junk diver back to hand. Arcum can cheat any noncreature artifsct into play.
14. Declare an infinite loop.
15. LOOP
- Cast junk diver. Paradox trigger, untap all permanents.
- tap mana rocks to create at least 3 mana.
- tap arcum, sac junk diver, return myr retriever to hand.
- Cast myr retriever using 2 mana. Mana pool remains with 1. Paradox trigger, untap all permanents. 
- tap mana rocks to generate at least 3 mana.
- tap arcum, sac retriever. Return junk diver to hand.
- Cast junk diver using 3 mana. Mana pool remains with 1. Paradox trigger, untap all permanents.

- this generates infinite colorleas mana, or colored if you have a colored mana rock.

16. Tap flute for x=0, tutor for walking balista for x=500,000. Ping for 1 damage on each opponent.

UTILITY
Basalt Monolith+Rings of Brighthearth generates infinite colorless mana in case you cant cast the recurrable creatures. Both are searchable with arcum.

Teferi+ knowledge pool locks down your opponents from casting any spells. Teferi makes all spells cast at sorcery speed, knowledge pool's free spell is only at instant speed as it is still on the stack. Knowledge pool is a good card to pull with arcum before going infinite in case he gets removed. Then you can flute for teferi and cast him with enough mana.

Scrap trawler when sacrificed allows you go get back a countered myr retriever. Myr retriever when sacrificeded gets back a countered junk diver.