It turns out, not all undead are suitable as main combat units.

For the same type, Gaven only needs to compare and select one.

The position of the Six-armed Semi-Giant Skeleton Soldiers in infantry combat is irreplaceable.

The Razor Skeleton Dragon Beast Cavalry is the optimal choice for cavalry.

The control and healing abilities of the Super Shadow can only be matched by a few undead that cannot be mass-produced.

What Gaven needs to do is further fill the gaps in the Undead Slaughter Undead Army — the air force and underground operations.

Although the Shadow Flyer is powerful, its high cost limits large-scale deployment.

Dispersed use is far less strategically valuable than cluster use.

The Undead Slaughter Legion does have some air combat capabilities, as those Super Shadows are incorporeal undead, they can only fly, not run.

However, their flight speed is excessively slow; as long as there’s a slightly professional flight method, they can be left far behind.

In air combat, speed ranks first.

The Shadow Flyer has already proven this in practical situations.

If you can’t even touch the enemy’s tail, no matter how powerful your attack strength or abilities are, it’s useless.

Gaven focused his attention on the Flame Ghosts native to the Flame Bone Territory.

It is unrealistic to expect them to develop Energy Eruptors; they cannot endure such mysterious magic formulas, as evidenced by the Shadow Flyer’s life dice, which number thirty.

The Slaughter Devouring Evolution only pushes them to a higher level based on their original foundation, not creating something from nothing or granting abilities beyond their Power Domain.

However, in the Slaughter Devouring Evolution, adjusting their form to grant them flame wings for faster flight speed and more flexible flight methods is feasible, and they might even acquire the ability to surge flames for temporary acceleration.

It’s slightly unfortunate that these fire-winged ghosts waste too much evolutionary energy on flight capability, leaving no room to enhance attack methods; they can only cast the Fire Bead Technique.

It’s the same pseudo-fireball technique that once startled Gaven, capable of single-target attacks without explosive group attacks.

This is only temporary; once the fire-winged ghosts grow to a Transcendent state, their Fire Bead Technique will automatically advance to the Fireball Technique.

In this way, their usage range broadens, not just limited to air combat.

Without air enemies, they can provide long-range fire support.

They start with at least eight life dice; as long as they are carefully nurtured, only a few small-scale conflicts, surviving will send them into Transcendence.

As for the undead for underground operations, Gaven could not find any good candidates after much consideration.

Gaven did consider using Ghouls to fight against Ghouls.

Ghouls are also undead; having taken over so much territory from the Divine Kingdom of Ghouls, he naturally already mastered the magic formula for recruiting Ghouls.

Unfortunately, he cannot control the direction of the Ghouls’ Slaughter Evolution Enhancement; an invisible force interferes with him, making those Super Ghouls only possess larger bodies, faster movement speed, stronger paralysis attack, and quicker reproduction speed.

If these Super Ghouls were placed in the Material Plane, they would undoubtedly be a disaster for intelligent beings.

But in their internecine conflict with other ghouls, their impact is relatively limited; they are not even as effective as groups of four ordinary ghouls!

Moreover, Gaven most needs them to penetrate the ghoul nests for underground operations; larger bodies become a disadvantage rather than an advantage there.

If he only recruits ordinary ghouls, under equal conditions, they cannot defeat the ghouls under the Ghoul King’s command because the opponents are hungrier and more aggressive.

The Ghoul King, as the deity of ghouls, is not named in vain, inherently suppressing the enemy’s ghouls and enhancing his own.

Overall, it’s like comparing one’s weaknesses to others’ strengths, which is certainly disadvantageous.

After much deliberation.

Gaven ultimately chose the Skeleton Lizard Sharks as the special underground troops, the skeleton structure here is very suitable for them.

The Skeleton Lizard Sharks, enhanced through Slaughter Devouring Evolution, primarily have their movement speed through skeletal grounds enhanced and gain a new ability — Skeleton Tremor Collapse.

They can use the tremor method while moving underground to cause large-scale collapses of surrounding skeleton grounds.

This ability is unparalleled for clearing the complex ghoul tunnels.

It will directly bury those ghouls alive under the skeleton soil, even if it does not crush them to death, they can swim through the bones to bite them to death, leaving the ghouls unable to resist in such a state.

Although Ghouls have tunneling ability, their speed is not fast, unlike the magical nature of the Skeleton Lizard Sharks’ abilities, which are more flexible and convenient.

If the Skeleton Lizard Sharks are considered conventional underground troops, then the eighteen Giant Insect Shadows received from the Domain of the Corpses are unconventional troops.

This is the third major branch of Nightshadow.

The Winged Night Shadow corresponds to those powerful flying creatures.

The Shadow Walker Night Shadow corresponds to those powerful humanoid creatures.

The Giant Insect Shadow corresponds to those large, formidable insect creatures.

The above classifications only apply to naturally formed Nightshadows.

Those who transform themselves or others into Nightshadows through evil sacrifices do not fall into this category.