Some Cyberdark cards

[Case_closed]

Trying to make Cyberdark cards useful. Tell me if i failed.

True Cyberdark Dragon [DARK/Level 10/Machine/Effect]
[ATK:2000/DEF:2000]
Lore: True Cyberdark Edge+True Cyberdark Horn+True Cyberdark Keel
When this card is Summoned, you can select 1 level 4 or Lower "Cyberdark" monster OR a Dragon-Type in either player's graveyard, and equip it to this card. This card gains the combined ATK of the monsters equipped to this card. When this card destroys an opponent's monster by battle, you can Select 1 Dragon-Type monster in either player's graveyard, and equip it to this card. When this card is destroyed: Special Summon 1 monster that was equipped to this card to your side of the field. If this card would be destroyed, you can destroy 1 monster card equipped to this card instead.

True Cyberdark Edge [DARK/Level 4/Machine/Effect]
[ATK:1500/DEF:1500]
Lore: If you control a "Cyberdark" monster, you can Special Summon this card from your hand. When this card is Special Summoned, you can select 1 level 4 or Lower "Cyberdark" monster OR a level 3 or lower Dragon-Type in your graveyard, and equip it to this card. This card gains the ATK of the equipped monster. This card can attack your opponent directly. If it attacks using this effect, the Battle Damage it inflicts to your opponent is is decreased by 800. If this card would be destroyed, you can destroy 1 monster card equipped to this card instead. This card is treated as a Level 3 Dragon-Type monster while in your graveyard.

True Cyberdark Horn [DARK/Level 4/Machine/Effect]
[ATK:1500/DEF:1500]
Lore: If you control a "Cyberdark" monster, you can Special Summon this card from your hand. When this card is Special Summoned, you can select 1 level 4 or Lower "Cyberdark" monster OR a level 3 or lower Dragon-Type in your graveyard, and equip it to this card. This card gains the ATK of the equipped monster. When this card attacks a monster in Defense Position, this card gains 400 ATK. This card inflicts piercing damage. If this card would be destroyed, you can destroy 1 monster card equipped to this card instead. This card is treated as a Level 3 Dragon-Type monster while in your graveyard.

True Cyberdark Keel [DARK/Level 4/Machine/Effect]
[ATK:1500/DEF:1500]
Lore: If you control a "Cyberdark" monster, you can Special Summon this card from your hand. When this card is Special Summoned, you can select 1 level 4 or Lower "Cyberdark" monster OR a level 3 or lower Dragon-Type monster in your graveyard, and equip it to this card. This card gains the ATK of the equipped monster. When this card destroys an opponent's monster by battle, inflict 500 damage to your opponent. If this card would be destroyed, you can destroy 1 monster card equipped to this card instead. This card is treated as a Level 3 Dragon-Type monster while in your graveyard.

Cyberdark Temple [Spell/Field]
Lore: Once per turn, while you control a "Cyberdark" monster, you can Select 1 Level 3 or lower Dragon-Type monster in your graveyard, and equip it to a 'Cyberdark" monster you control. All "Cyberdark" monsters you control gain 300 ATK for every monster equipped to them.

Cyberdark Preparations [Spell/Normal]
Lore: Discard 1 card in your hand: Add 1 "Cyberdark" monster from your deck to your hand, and send 1 Dragon-Type monster from your deck to your graveyard. While this card is in your graveyard, you can banish this card along with a Dragon-Type monster in your graveyard: Add 1 "Cyberdark Impact!" from your deck to your hand. You cannot use this effect the turn this card was activated. You can only use the effect of "Cyberdark Preparations" once per turn.