hi, i got a couples of questions for you guys and thk for the anser:

1- If i got silver surfer (At the start of the combat phase, you may discard a Fantastic Four character card. If you do, gain control of the initiative.) and i it is my opponent turn and i use silver surfer power, can he use, ( Cosmic: Activate >>> KO target character with cost less than or equal to the number of ongoing plot twists you control. Use this power only during your attack step.) this power to reply on the chain of my power then it is my turn? or he cant because he never had the attack step?

2- for team superman, if i got 3 superman on the table and i got this superman (Pay 2 endurance -> Move Superman.
Cosmic: While Superman is protecting a defender, that defender has reinforcement and invulnerability.) can i pay 2 endurence and move any of my superman, and can any of my superman give give reinforce and invulnerable while they are protecting while i got my cosmic on ?

3- If i got thanos ( Cosmic: Whenever a character with cost 4 or less becomes stunned, KO it.) and 1 of my caracter of 4 of cost stun, can i use this power (Ongoing: Pay 2 endurance >>> Target stunned Underworld character you control can't be recovered or KO'd this turn.) to keep my caracter or i cant react because it is whenever a caracter stun he KO?

4- if i got -1 of endurence at the end of the combat phase can i use ( At the start of the recovery phase, gain 1 endurance for each stunned Underworld character you control) to survive a other turn or we end the game when someone change phase at 0 endurence or less?

5- if i use this (Pay 3 endurance -> KO target character if its cost is less than or equal to the number of face-down resources its controller controls. Use this power only once per turn and only during your attack step.) can my opponent reply by turning 2 resource location face up and negate my power if i was targetting a caracter with cost of 5 and now he got only 4 face down resource?

6- if i choose my oppenent and i use this (Activate -> Choose a player. Target Darkseid's Elite attacker you control gets +X ATK this attack, where X is the number of face-down resources the chosen player controls.) while i m attacking can he turn 2 location and 1 pt he can use in this combat to reduce the attack i give to my attacker ?

7- Can Mr fantastique (Pay 2 endurance -> Transfer target equipment you control to an unequipped Fantastic Four character you control.) move a equipement from a stun caracter?

8- when we are stun , what are the thing that or caracter keep ( team affiliation, the type , the cost ???)

thk again guys i know their is a lot to anser ... )

Silver Surfer triggers and resolves during the combat phase, before any attack step starts. Your opponent can't respond with that power because their attack step had not started yet.

When a card refers to its own name, it's only referring to itself. If it worked on any Superman, it would have to say "a character named Superman".

When the character stuns, the effect goes on the chain, so yes you can respond with that power.

Endurance totals are not checked until the wrap-up step, which occurs at the end of the recovery phase, after those effects have already resolved.

It won't negate the effect, but it will resolve with no effect if they do that. Yes, that's a legal move.

Yes. Your opponent would have to respond to that power and flip resources before your effect resolved. Once the effect resolves, flipping resources will not change how much ATK was already given.

Equipment cannot be moved to or from a stunned character.

When a character is stunned, the text box becomes blank and willpower becomes zero. Everything else stays.