Black Lightning Eradicator and more stuffs

|Black Lightning Eradicator|???|????|Thunder/Xyz/Effect|Dark|7||2600|1600|2 Level 7 monster. This card is unaffected by any card/effects that are in a chain unless there are multiple card/effects with same names are in it. During either player's turns: You can detach 1 Xyz Material from this card; destroy a number of cards in either player's hand or side of the field equal to the Chain Link number of this card, and if you do, this card cannot declare an attack. You cannot activate this effect if multiple cards/effects with same name are in that chain.|

|Undine Engineer|???|????|Aqua/Effect|Water|4||1600|1200|During your Main Phase, if a Chain Link 2 or higher resolves: You can Special Summon 1 Level 4 or lower monster from your Deck. this effect can only be activated once while face-up.|

|Aggressive Wind Blast|???|????|Trap Card|Trap||||When an opponent's monster declare an attack: Target that monster; return it to the hand. If this card is in the Graveyard and a Chain Link 3 or higher resolves; add this card to your hand.|

|Chain Draw|???|????|Spell Card|Spell||Quick-Play||||Draw 1 card, then shuffle 1 card from your hand to the deck. If this card was activated as Chain Link 2 or 3; shuffle this card into your deck instead of sending it to the Graveyard. If this card was activated as Chain Link 4 or higher; return this card to the hand instead of sending it to the Graveyard.|

"This card is unaffected by any card/effects that are in a chain unless there are multiple card/effects with same names are in it."

Does this also include standalone links? Technically every effect is in a chain.

"You can detach 1 xyz Material from this card; both players must activate all cards or effects they controls that can be activated in a valid situation."

How would that work? After this resolves (and the effect is in place), there's not any definite timing for when players "must" activate their effects.

The chain link 5 effect is interesting, maybe that should be the focus of thunder types now

I have redesign it and added 3 more cards