Clear, Attribute and pals

Clear Phantom
Level 3/DARK/Fiend/Effect
1200ATK/800DEF
You are unaffected by the effects of "Clear World". When this card is Summoned: You can add 1 monster that lists "Clear World" in its text from your Deck to your hand. You can only use this effect of "Clear Phantom" once per turn. When this card is destroyed by battle and sent to the GY: You can destroy the monster that destroyed it, and if you do, send the top 3 cards from your opponent's Deck to the GY.

Clear Rage Golem
Level 4/DARK/Rock/Effect
1600ATK/1800DEF
You are unaffected by the effects of "Clear World".  When this card is Summoned: You can add 1 Spell/Trap that lists "Clear World" in its text from your Deck to your hand. When this card inflicts Battle Damage to your opponent, inflict 300 damage to them for each card in their hand. You can only use each effect of "Clear Rage Golem" once per turn.

Clear Cube
Level 1/DARK/Machine/Effect
0ATK/0DEF
You are unaffected by the effects of "Clear World". You can discard this card: Add 1 "Clear World" from your Deck to your hand. If this card would leave the field by an opponent's card effect (Quick Effect): You can banish it; Special Summon 1 "Clear Cube" from your Deck or GY, also it is unaffected by your opponent's card effects for the rest of this turn. You can only use this effect of "Clear Cube" once per turn.

Clear Vicious Knight
Level 7/DARK/Warrior/Effect
2300ATK/1100DEF
You are unaffected by the effects of "Clear World". If your opponent controls more monsters than you do: You can Special Summon this card (from your hand) by Tributing 1 monster. Cannot be destroyed by card effects. If you control no other monsters, this card gains ATK equal to the monster with the highest original ATK on the field, except "Clear Vicious Knight".

Clear Sacrifice
Normal Spell
If you control "Clear World", this card's activation and effects cannot be negated. You can banish 2 Level 4 or lower DARK monsters from your GY: Special Summon 1 Level 7 or higher DARK monster from your hand or Deck. You can banish this card from your GY: Special Summon 1 DARK monster from your Banishment, but negate its effects. You can only use 1 effect of "Clear Sacrifice" per turn, and only once that turn.

Clear Wall
Continuous Spell
Monsters that list "Clear World" in their text cannot be destroyed by battle. You never take Damage that is 1000 or less. If you would take more than 1000 damage: You can destroy this card instead.

Attribute Gravity
Continuous Trap
When an opponent's monster attacks: You can change the attack target to 1 other monster on the field with the same Attribute as it (including your opponent's monsters) and you proceed to Damage Calculation. If your opponent activates a card or effect while you control "Clear World": You can send this card from the field to the GY; negate the effect, and if you do, put that card on the bottom of your opponent's Deck.

Attribute Chameleon
Continuous Trap
Once per turn: You can change the Attribute of 1 monster your opponent controls, this lasts until the End Phase. You can banish this card from your field, add 1 monster that lists "Clear World" in its text from your Deck to your hand.