Precursor Golem + Rite of Replication + Laboratory Maniac + Shadow Rift

Precursor Golem

Rite of Replication

Laboratory Maniac

Shadow Rift

How it works

1. Cast Rite of Replication with kicker by paying 7, targeting Precursor Golem.
2. Precursor Golem triggers, creating a kicked copy of Rite of Replication targeting every other Golem.
3. Resolve the first Rite of Replication, creating five token copies of the Golem it is targeting.
4. If the Golem was Percursor Golem, the Percursor Golem tokens enter the battlefield, creating a total of ten 3/3 Golem artifact creature tokens.
5. Repeat from step 3 for each other Rite of Replication.
6. Cast Shadow Rift by paying , targeting any Golem.
7. The six Percursor Golems each trigger.
8. Resolve the first Percursor Golem trigger, creating a copy of Shadow Rift targeting every other Golem.
9. Repeat step 8 for each remaining trigger.
10. Resolve the first Shadow Rift, causing you to draw a card.
11. Repeat step 10 until you draw from an empty library, causing you to win the game.