Requires

Kalamax, the Stormsire must be on the battlefield. Nexus of Fate must be in hand. Merchant Scroll must be in hand. Narset's Reversal must be in hand. Cryptolith Rite must be on the battlefield. Kalamax does not have summoning sickness. Mana needed:

Steps

1. Activate Kalamax by tapping it, adding one mana of any color.
2. Cast Nexus of Fate by paying .
3. Kalamax first and second abilities triggers.
4. Resolve the first ability, creating a copy of Nexus of Fate.
5. Resolve Kalamax's second ability, putting a +1/+1 counter on itself.
6. Resolve the copy of Nexus of Fate, taking an extra turn after this one.
7. Resolve the Nexus of Fate, taking an extra turn after this one.
8. Pass to next turn.
9. Activate Kalamax by tapping it, adding one mana of any color.
10. Cast Merchant Scroll by paying .
11. Holding priority, cast Narset's Reversal by paying , targeting Merchant Scroll.
12. Kalamax first and second abilities triggers.
13. Resolve the first ability, creating a copy of Narset's Reversal, targeting the first Narset's Reversal.
14. Resolve Kalamax's second ability, putting a +1/+1 counter on itself.
15. Resolve the copy of Narset's Reversal, returning it to your hand and choosing Merchant Scroll.
16. Resolve the Narset's Reversal, returning Merchant Scroll to your hand and search your library for Nexus of Fate and putting in your hand.
17. Pass the turn.
18. Repeat.

Results