Series

This is the original kerodynance loop.
It is a famous loop, so many of you may know it, but it loops with 2 Xtreme Crawlers and Kelodynance with a Phoenix in the mana.
(1) Reclaim the field with an Extreme Crawler → (2) Reclaim mana with a Kerodynance → (3) Reclaim the field with another Extreme Crawler → (4) Use some kind of cip → (5) Reclaim mana with a Kerodynance → (6) to (7) are looped from then on.
There are many ways to use (4), but the ones used in Rosaan are
ABronze-Arm Tribe for infinite mana multiply
BInfinite mana swap with Naso (swap Phoenix to increase the number of actions)
CLibrary out with Zarva (finishing loop)

When Reclaiming combo parts, you can align them by turning a Gigahorn into a cip in (4).
Shield fall care can be solved by looping Super Emeral.
Mana fall is a long way but can be solved by Naso -> Morse, but if you are worried, you can substitute Stormcrawler or Kaburakatabla in it.

Since Mobile Forest is a cost reduction that lasts for a long time, it is enough to have one on the field.
As a rule of thumb, with 1 card out and 6 Phoenixes (1 blue, 2 green) in mana, 1 Kelodynance, 2 Extreme Crawlers, and 1 Bronze-Arm Tribe in hand, infinite mana Multiply will loop.
If you get to 7 Phoenixes (1 of them blue, 2 green, 1 black) in that situation, the Zarva Loop will turn.

It is slow in the modern environment, but it is an interesting move if you are interested.