A LV monster I came up with

[Freezyefc]

C.E.R.E.B.E.L.L.A Monsters/Spells/Traps:

 

C.E.R.E.B.E.L.L.A LV1 (Dark/1-Star/400ATK/900DEF)

Psychic/Effect

Control of this card cannot switch. During your End Phase, take 100 damage, and return this face-up card to your deck to Special Summon 1 "C.E.R.E.B.E.L.L.A LV3" from your deck.

 

C.E.R.E.B.E.L.L.A LV3 (Dark/3-Star/1200ATK/1100DEF)

Psychic/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of "C.E.R.E.B.E.L.L.A LV1". Control of this card cannot switch. When this card is Special Summoned, destroy 1 face-down card your opponent controls. During your next End Phase, take 300 damage, and return this face-up card to your deck to Special Summon 1 "C.E.R.E.B.E.L.L.A LV5" from your deck. If this card is in your hand, you can pay 400 LP to return it to your deck to add 1 "C.E.R.E.B.E.L.L.A LV1" from your deck or graveyard to your hand.

 

C.E.R.E.B.E.L.L.A LV5 (Dark/5-Star/2000ATK/1300DEF)

Psychic/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of "C.E.R.E.B.E.L.L.A LV3". Control of this card cannot switch. When this card is Special Summoned, destroy 1 card your opponent controls. As long as this card remains face-up, it cannot be destroyed by a card effect. During your next End Phase, take 500 damage, and return this face-up card to your deck to Special Summon 1 "C.E.R.E.B.E.L.L.A LV7" from your deck. If this card is in your hand, you can pay 600 LP to return it to your deck to negate 1 attack from a monster your opponent controls.

 

C.E.R.E.B.E.L.L.A LV7 (Dark/7-Star/2800ATK/1500DEF)

Psychic/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of "C.E.R.E.B.E.L.L.A LV5". Control of this card cannot switch. When this card is Special Summoned, destroy 2 cards your opponent controls. As long as this card remains face-up, it cannot be destroyed. If this card is in your hand, you can pay 800 LP to return it to your deck to negate the activation and effect of an opponent's card that destroys a Psychic monster(s) you control, and destroy that card.

 

C.E.R.E.B.E.L.L.A XI (Dark/11-Star/4400ATK/1700DEF)

Psychic/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 1 "C.E.R.E.B.E.L.L.A LV7". Control of this card cannot switch, and it cannot declare a direct attack, unless it is the only card on your side of the field and you have no cards in your hand. As long as this card remains face-up, it is unaffected by the effects of your opponent's Effect Monsters, Spell Cards and Trap Cards. During each of your End Phases, take 1100 damage.

 

LV Upgrade (Normal Spell)

Pay 1200 LP. Return 1 face-up "LV" monster you control to your deck. Special Summon 1 "LV" monster from your deck with a higher "LV", ignoring any and all Summoning conditions. The monster Special Summoned by this effect cannot declare an attack this turn.

 

Uncontrollable Wipeout (Normal Trap)

Activate only when you control a "C.E.R.E.B.E.L.L.A XI". Pay half of your LP. Send all other cards on the field and in both player's hands to the graveyard.

 

Will update with other LV monsters.. by the way do you think its a good idea to add an optional effect on Nomi Monsters that activate from hand?

[Freezyefc]

Ok time to add a new one :)

 

Sky Palace Angel LV4 (Light/4-Star/800ATK/600DEF)

Fairy/Effect

When this card is Summoned, increase your LP by 1000. If you control a "Sky Palace" Field Spell, return this card to your deck during your End Phase and Special Summon 1 "Sky Palace Angel LV6" from your deck.

 

Sky Palace Angel LV6 (Light/6-Star/1600ATK/600DEF)

Fairy/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of "Sky Palace Angel LV4". When this card is Summoned, increase your LP by 1500. Each time this card destroys an opponent's monster, increase your LP by the destroyed monster's Level x 200. If you control a "Sky Palace" Field Spell, return this card to your deck during your next End Phase and Special Summon 1 "Sky Palace Angel LV8" from your deck. If this card is in your hand, you can return it to your deck if the difference between your LP and your opponent's is 1000 or more. Add 1 "Sky Palace" monster from your deck or graveyard to your hand.

 

Sky Palace Angel LV8 (Light/8-Star/2400ATK/600DEF)

Fairy/Effect

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of "Sky Palace Angel LV6". When this card is Summoned, increase your LP by 2000. As long as you control a "Sky Palace" Field Spell, any effect that would inflict damage to you instead increases your LP by the same amount. Each time this card destroys an opponent's monster, increase your LP by the destroyed monster's Level x 300. If this card is in your hand, you can return it to your deck if the difference between your LP and your opponent's is 2000 or more. Select 1 "Sky Palace" monster you control, and increase its ATK by that amount, until the End Phase.

 

I intend on making a "Sky Palace" set so this is a preview of sorts :P Also made some changes to C.E.R.E.B.E.L.L.A