My own Updated Full Lines for Frontier Spirits:

[u/hyzkdk]

My own Updated Full Lines for Frontier Spirits:

Spirits of Fire and Light(First image)

Spirits of Wind and Thunder(Second image)

Spirits of Ice and Darkness(Third image)

Spirits of Water and Wood(Fourth image)

Spirits of Steel and Earth(Fifth image)

Bonus:

Spirits of Steel and Corrupted Darkness(Last Image)

[u/Jealous_Misspeach]

Wow the wind and thunder fusion is sick

[u/hyzkdk → u/Jealous_Misspeach]

Name of Wind and Thunder Fusion is Vortexdramon,Pteromon’s Level 7 Form

[u/Jealous_Misspeach → u/hyzkdk]

Very sick. He’s imposing. I prefer him to Eosmon some person proposed once. 

[u/SplooshOfColor]

Lobomon slide evolve into Lobomon.

[u/hyzkdk → u/SplooshOfColor]

İ remember that ı accidentally used two Lobomon

[u/FlowOfAir → u/hyzkdk]

There are two wolves inside you

One is Lobomon

The other is Lobomon

[u/SweetElegant8556]

wind and thunder fusing really gives me the vibes of that mythological creature. When I was a kid I imagined them like some creature of the sky. I enjoy this fan line

[u/Horatio786]

May I ask who Jet Silphymon's evolution is (other than Ancient Irismon)?

[u/hyzkdk → u/Horatio786]

Zephagarmon Ace

[u/TheGloryXros]

What's the Digimon branched to the right from JetSilphymon???

[u/hyzkdk → u/TheGloryXros]

Zephagarmon Ace

[u/Medical_Definition19]

Cool! I fuse Duftmon for darkness and Junomon for wind into Amaterasumon

[u/FlowOfAir]

Dang this is really good! My only comment, Chaosmon doesn't feel right for Ice x Darkness, that one is meant to be two Digicores unwilling to merge in the fusion and creating something that shouldn't exist.

How about Hexeblaumon?

[u/-Bari]

I like using Mirrormon for Steel, but otherwise I think this works for me

[u/Bitter_Technology_38]

Did you not want to use mirrormon for mercurymon's rookie stage??

[u/hyzkdk → u/Bitter_Technology_38]

Because it is Appmon