To do the full combo you need either 1 formud skipper or any two crusadia (even two of the same name) except for arboria because you want to search for arboria off of magius to make Isolde using arboria and spatha.
This is the combo step by step:
1. Summon formud skipper
2. Activate formud skipper revealing spatha from the extra deck
3. Link formud skipper into magius
4. Use formud skipper's GY effect to search scrypton
5. Special summon scrypton to magius link point by banishing formud skipper from grave
6. Search arboria off of magius
7. Link magius and scrypton into spatha
8. Summon arboria to spatha's link point
9. Link spatha and arboria into Isolde
10. Search arboria off of Isolde using Isolde's first effect
11. Activate Isolde's second effect sending sword of deep-seated, cursed bamboo sword, horn of the unicorn, and Phoenix blade to special summon Armageddon knight
12. Sword of deep-seated activates (mandatory effect in grave) chain Armageddon as chain link 2 and cursed bamboo sword as chain link 3, search for broken bamboo sword and send zephyros off of armageddon knight
13. Equip broken bamboo sword to Armageddon knight then use zephyros effect to return it to hand to special summon itself from grave
14. Overlay Armageddon knight and zephyros into dugares
15. Activate dugares detaching two to special Armageddon knight from grave
16. Activate Armageddon knight sending summoner monk to grave
17. Link Isolde and Armageddon knight into akashic magician
18. Link akashic magician and dugares into selene (left extra monster zone)
19. (Selene places spell counters on herself on summon) remove 3 spell counters from selene to special summon summoner monk from grave
20. Activate summoner monk sending broken bamboo sword from hand to grave to special summon codebreaker zero day from deck
21. Link codebreaker zero day and summoner monk into codebreaker virus swordsman (under Selene's middle arrow)
22. Activate codebreaker virus swordsman summoning codebreaker zero day from grave (to Selene's link point)
23. Link codebreaker zero day and codebreaker virus swordsman into codebreaker virus berserker (same as virus swordsman summon it under Selene's middle arrow)
24. Activate codebreaker virus berserker summoning zero day and virus swordsman to Selene's open link points
25. Link codebreaker virus swordsman and selene into another selene (this time in the right extra monster zone)
26. Activate selene removing three spell counters to special summon summoner monk and activate Phoenix blade in grave banishing arboria and spatha to add Phoenix blade to hand
27. Activate summoner monk sending Phoenix blade to grave to summon rescue ferret from deck
28. Activate rescue ferret shuffling it back into the deck to summon witch of the black forest and plaguespreader zombie
29. Link codebreaker virus berserker and witch of the black forest into knightmare gryphon (to Selene's left most link marker)
30. Activate witch of the black forest searching for exodius
31. Link plaguespreader zombie and summoner monk into knightmare Cerberus (under Selene's middle arrow)
32. Activate plaguespreader zombie in grave placing the arboria in hand on top of the deck to special summon plaguespreader zombie
33. Link plaguespreader zombie and codebreaker zero day into crystron halqifibrax (under Selene's right arrow)
34. Activate halqifibrax effect summoning (another) plaguespreader zombie from deck
35. Activate Phoenix blade in grave banishing Armageddon knight and Isolde to add Phoenix blade to hand
36. Summon exodius from hand by shuffling all monsters in grave into the deck (and place any extra deck monsters back in the extra deck) (it's a summoning condition not an activated effect)
37. Link plaguespreader and exodius into knightmare Phoenix (to knightmare gryphon's left arrow)
38. Activate plaguespreader in grave placing the Phoenix blade on top of your deck to special itself from grave
39. Link halqifibrax and plaguespreader into knightmare unicorn (in the left extra monster zone)
The end result is 5 co-linked monsters in a U-link that can't be destroyed by battle or card effect (and unicorn draws you 4 cards each one of your draw steps because of the 4 co-linked knightmares)
(There is a way to work tri-gate wizard into it but you need a few extra extenders to do it)
480
360
450
330
