Deadly Sins? In MY Yu-Gi-Oh?

Avaritia, the 1st Deadly Sin
Level 1 DARK Fiend/Pendulum/Effect, 400 ATK/100 DEF
Pendulum Effect (1-1): When you summon a Fiend-Type "Deadly Sin" monster, draw 1 card, and if you do, take 1000 damage for every card in your hand at the end of your turn.
Monster Effect: Once per turn, you may select up to 2 Fiend-Type cards you control with the same Level as this card: Draw a card. (Tentative, may remove Monster Effect.)

Luxuria, the 2nd Deadly Sin
Level 2 DARK Fiend/Effect, 800 ATK/200 DEF
When you Normal or Special Summon this card, you may search your deck for 2 "Deadly Sin" monsters with different names in your Deck, and reveal them to your opponent: Your opponent randomly chooses 1 of these cards to add to your hand, and if you do, you take 200 damage x the Level of the added card, and send the rest to the GY. The deck is then shuffled.

Ira, the 3rd Deadly Sin
Level 3 DARK Fiend/Tuner/Effect, 1200 ATK/300 DEF
When this card is used as a tribute for the summoning of a monster, or as material for a Fusion, Synchro, Xyz, Link, or Ritual Monster, deal 500 damage x the Level of the summoned card to the player that summoned it at the end of that turn, and then banish it if it is not a Fiend-Type "Deadly Sin" monster.
When this card is used as a Synchro or Xyz Material for a Fiend-Type "Deadly Sin" monster, it gains 500 ATK x its Level/Rank.

Gula, the 4th Deadly Sin
Level 4 DARK Fiend/Effect, 1600 ATK/400 DEF
You may only use each effect of this card's name once per turn.
Once per turn, if you control a Fiend-Type "Deadly Sin" monster, you may Special Summon this card (from your hand), and if you do, take 400 damage.
When you Special Summon this card, you may Special Summon 1 Level 4 or lower DARK Fiend-Type monster from your hand, and if you do, take damage equal to the summoned monster's DEF.

Invidia, the 5th Deadly Sin
Level 5 DARK Fiend/Effect, 2000 ATK/500 DEF
If you have less cards in your hand than your opponent, you may banish this card (from your hand): Draw until you have the same amount of cards as your opponent.
Once per turn, during either player's Battle Phase, if your opponent controls less monsters than you while this card is banished, your opponent may Special Summon this banished card to their side of the field. You may not activate cards or effects in response to this effect, and if you have more cards than your opponent, deal 500 damage for every card more that you have in your hand than your opponent.

Superbia, the 6th Deadly Sin
Level 6 DARK Fiend/Effect, 2400 ATK/600 DEF
When you Normal or Special Summon this card, you may select up to 2 DARK Fiend-Type monsters in your Pendulum Zone, and Special Summon them. Banish them when they leave the field or at the end of that turn, and take 600 damage if they are banished by this effect. You may only use this effect of "Superbia, the 6th Deadly Sin" once per turn.
Once per turn, you can choose up to 2 DARK Fiend-type monsters you control that have Levels: Make their Level(s) equal to the Level of this card. You may not Special Summon any monsters from your Extra Deck for the rest of that turn, except DARK Fiend-type Monsters.

Acedia, the 7th Deadly Sin
Level 7 DARK Fiend/Pendulum/Effect, 2800 ATK/700 DEF
Pendulum Effect (7-7): Once per turn, you may send 1 DARK Fiend-Type monster from your Deck to your GY: Deal 700 damage to your opponent. The deck is then shuffled.
When you Normal or Special Summon this card, you may banish 1 DARK Fiend-Type monster from your GY, and take 700 damage: Draw 1 card.

Lucifer, Fallen One of Deadly Sins
Rank 6 DARK Fiend/Xyz/Effect, 2400 ATK/1800 DEF
3 Level 6 Fiend-Type monsters
Once per turn, you may detach 1 material from this card: Damage you would take by the effects of other Fiend-Type "Deadly Sin" monsters you control is instead dealt to your opponent.
Once per turn, during either player's turn, when your opponent would summon 2 or more monsters at the same time, you can detach 2 materials from this card: Negate the summoning, and if you do banish them: Your opponent takes 600 damage for every card banished by this effect.

Belphegor, Deviser of Deadly Sins
DARK Fiend/Synchro/Effect, 2400 ATK/1800 DEF
1 DARK Fiend-Type Tuner monster + 1 or more Fiend-Type non-Tuner monsters
When this card is Link Summoned, destroy all cards in your Pendulum Zones, and if you do, activate 1 of these effects, for every DARK Fiend-type monster destroyed by this effect:
0: Take 2400 damage.
1: Draw 1 card, then take 1200 damage.
2: Select up to 2 DARK Fiend-type monsters with Levels in your GY, and Special Summon them. Their effects are negated, their Levels become 6, and their ATK becomes 2400.

Seven Deadly Sins
Continuous Spell
You can only activate this card while you control no monsters.
When you activate this card, send all cards in your hand to your GY: Special Summon as many DARK Fiend-Type non-Synchro "Deadly Sin" monsters with different Levels as possible from your GY, or place them in your Pendulum Zones.
While this card is face-up, all face-up non-DARK Fiend-Type monsters lose 1000 ATK.
You may only activate 1 "Seven Deadly Sins" per turn.
At the end of a turn that this card is activated, take damage equal to the combined Attack of every face-up DARK Fiend-Type monster you control.