Does Tim Drake's ability let you stack all of Sinestro's stuns one guy?

I'm fairly certain the answer is no, because Tim Drake's ability makes you take the stun from being stunned back in return. Lots of characters that would prevent stun such as Cap A or Spider-Man don't actually prevent that stun, so my guess would be that you can make all of the "getting stunned back" onto one guy and then all of the team-attackers become stunned.

Assuming that Sinestro's being triggered by good old fashioned conclusion-of-the-attack stuns, rather than any trickiness like Roy Harper:

Sinestro triggers during attack conclusion, when no one has priority. His effect is not placed on the chain until after conclusion is finished, right before the attacking player gets priority again. This means that his effect resolves after the attack is over, and no characters are attacking anymore. Modifiers which protect attackers, or which use "while attacking," can't stop Sinestro, because they're already finished by the time he strikes.

The only thing Id have to say to that is why you didnt just attack sinestro with cassie.

My understanding is that Sinestro's stun is triggered so during the combat, when you stun the gun it sets up a trigger to stun a charecter but doesn't actually stun it till out of combat, so you should have priority to redirect the stuns w/ Tim.

Two points you need to remember.

First, Tim Drake allows you to deflect one team attacker's stunning onto another team attacker. After attack conclusion, none of your characters can be team attackers, This is why Tim Drake won't help you.

Second, Tim Drake generates a replacement modifier, which is a type of modifier that doesn't use the chain. This is why replacement modifiers are able to replace events even during an effect's resolution, as when Terra tries to stun Toad, let's say. So, while it doesn't especially impact the answer, no, you won't have priority when Sinestro stuns your character.

Tim Drake's text:

If a team attacker you control would become stunned, instead, you may choose another team attacker you control. If you do, stun the chosen character.

The keyword is 'instead' so the choice is made to replace the normal stun a defender does on an attacker during the attack conclusion where no player has priority (so it does not use the chain). Sinestro's ability triggers after the attack conclusion which is outside the attack where Tim's ability no longer works. This is true for all unstunnable type modifiers that are confined to the attack sub-step.

In short... Sinestro is a pain to Titans and most other decks.

EDIT: HeroComplex is correct as usual... thanks.

Erick---I'm guessing you meant "confined to an attack sub-step," rather than the attack step. While I can't think of anything that protects your characters just for the duration of your attack step, such an effect would be pretty great to have against Sinestro.

Cassie Sandsmark is protected. Also, A Child Named Valeria would protect 3 and below F4 characters.

You may have missed over the key word "just" in that quote. There are effects which protect for the turn, and powers that protect at all times, just as there are those that protect only for an attack. But I believe there are none that protect for exactly the length of your attack step.

On another note, A Child Named Valeria doesn't only protect F4 characters.

what about avengers legandary battles where no one can be stunned..does sinestro affect them even though it says they can not be stunned?

Any cards that use the, "cannot be stunned while attacking" template will be stunned by Sinestro when the attack concludes.

Whenever an attacker stuns a defender you control other than Sinestro, stun that attacker.

could you explain why they would be stunned of this effect..dont they still have the team attacker characteristics after the attack is done...which means if they team attacked they cannot be stunned no matter what..why would sinestro controdict this?

The stun doesn't happen until the attack concludes, at which point the team attackers are no longer attacking.

I know it's confusing. Sinestro's text has the word "attacker" and that implies they're still attacking, but it doesn't work that way. When Sinestro's power triggers, because it is based on a character becoming stunned it checks back to the moment before the stun occured. This is to confirm the object (in this case an attacker) existed. Here is the relevant section in the CRD:

502.4 Triggered effects that trigger based on an object gaining the stunned characteristic or leaving play will look back to the moment right before the object became stunned or left play. This information is used to determine if the effect existed then so that it could trigger or to determine any other information that is relevant to the trigger event. Triggered effects that trigger off of a character or equipment leaving play will ignore whether that character or equipment’s text is currently inactive when determining whether or not they should trigger.

If you still don't understand this, please say. I'm sure someone else can explain it better than I can. I probably quoted the wrong section or something.

Here's the glossary entry that usually clears this up for folks:Characters can only ever be attackers or defenders during an attack; it is impossible to remain an attacker once the attack has ended. Sinestro simply refers back to who was the triggering attacker.

Techno, the bit you quoted on triggered effects has more to do with making sure that an effect existed at the right moment in order to trigger at all. To use an example other than the ones from that section, 502.4 explains what happens when Rogue, Powerhouse is stunned back while stunning a defender. She won't have her power after the stuns, but because she has it the moment before, the character she stuns will be KOed.