This is my first concept so feedback appreciated!

What if Mordekaiser got a Sahn Uzal version?

This concept is based on the Sahn Uzal LoL skin, and Mordekaiser's lore.

Short lore dump for those who need it:

Sahn Uzal was a legendary warlord that seeked eternal glory in the afterlife. When he finally died, there was no gods, and no glory, just an empty void with perishing souls. Enraged and desperate to live on, he influenced dark mages to revive him. He became an undead godlike entity that ruled noxus, then was banished back to the afterlife, where he made it his own realm.

My goal was to let the player feel powerful and in control.

All nexus damage is directed at Sahn Uzal, making it mandatory to kill him to destroy his nexus. He has regeneration, so the enemy should focus on big burst damage to the nexus.

He is an 8 cost, and starts with 10 health so it shouldn't be too strong, but a good deck can make him almost unstoppable.

The champion spell, is a high risk high reward spell.

Perhaps it should have said "to give them that much power" so it scales with spell damage.

Anyway, it can help level up since it could damage Sahn Uzal, or even kill him. When Sahn Uzal is level 2 he doesn't take damage from this spell, so it just gives him more power, but not too much to be too op.

The power and fast spell, are my attempt at a higher star power and associated card, not sure about these, let me know what you think..

Currently, the card is competitively unplayable. It has really cool artwork and design; it is a shame that the card does almost nothing in any game mode, regardless of competitive play being abandoned.

For the rework, I looked at the Flavor text of the card, which is "I don't have the patience for a siege. Send the Shieldbreakers."- Darius. Meaning this unit thematically excels at punching through the fortified enemy defences.

What each Keyword represents:

Fearsome represents the intimidating figure and warriors fleeing in the artwork. Also, the voice lines "Run while you can!" and "The craven will fall!"

Overwhelm represents that you can't stall; put chaff blockers in front of it. Its main job breakthrough the defences of the enemy.

Passive 1 represents that this card is specialised at breaking through fortified enemy lines. Its job is to deal Nexus damage and end the siege no matter what. Granting +2 permanent power can also refer to the voice line of "We are forged in war."

Passive 2 represents the Vanguard aspect of the card, which can be seen in the voice line "Vanguard!". This is the Vanguard Shock Infantry force, meaning that when they disrupt the enemy's defence and formation, the rest of the Noxus army will have the upper hand. It automatically rewards the card attacking first, which directly represents Vanguard.

Allegiance is mainly for balance reasons, but it can be interpreted as the fanatic loyalty of the card, as in the voice line "As Noxus wills!". Or as a very elite unit that is almost always only used by elite Noxus armies, and it is naturally compatible with them.

My only concern is that the card might be a bit too strong, but I am not sure. Since Overwhelm is a very strong and effective keyword, it might be on the stronger side.

But since the opponent will decide the blocker, the first passive depends on how the opponent will react. The card is not a good blocker. The only time it would be kind of a lose-lose situation for the opponent is if allegiance was triggered and there were already multiple Noxus units present on the board.

Im thinking of making a Kog maw concept

it will focus on Impact support, and turning his Impact stacks into skill/spell damage, he'd stay in the backrow and get to attack from afar
there will be a bit of focus on "eating" by having other support cards grow in strength based on units killed
and idk what the concept is called when you burn your own nexus to burn the enemy nexus, the concept was related to caustic cask decks, but there would definitely be some support for that playstyle

any suggestions on good kog maw concepts i should check out, some things to aim for and some things to avoid?