Questions

[Freelancer]

Do you need to reveal the cards you search for with doomsday?

If I chain of vapor a meddling mage on tendrills of agony with a aether vial with 2 counters on it and than proceed to cast a tendrills of agony does it resolve or can the opponent somehow stop it?
(stack; chain-both pass-I get priority-cast tendrills correct?)

If my opponent cast a meddling mage in response to a brainstorm with a aether vial does it counter the brainstorm yes or no? (almost 100% sure no, just making sure)

[Jacob Orlove]

1. You do not need to reveal the cards for doomsday.

2. Given that sequence of events, he'll never have priority to vial out the mage. However, if he copies the Chain, he can vial the mage out in response to the copy. You can, of course, copy it right back at the mage. This will end when someone runs out of targets or lands, and the mage may or may not be in play at that point.

3. Once a spell is on the stack, Mage cannot stop it.

[Malhavoc]

Do you need to reveal the cards you search for with doomsday?

No. It does not say "reveal them".

If I chain of vapor a meddling mage on tendrills of agony with a aether vial with 2 counters on it and than proceed to cast a tendrills of agony does it resolve or can the opponent somehow stop it?
(stack; chain-both pass-I get priority-cast tendrills correct?)

Yes, since you have priority you can cast tendril before the opponent has the opportunity to activate the vial. However he can do something in response to the storm trigger. Putting into play the meddling mage again would be useless, but putting into play, for instance, a true believer would stop your tendril copies from being able to target him (in fact they will target the only possible target: you; however you won't die for this anyway).

If my opponent cast a meddling mage in response to a brainstorm with a aether vial does it counter the brainstorm yes or no? (almost 100% sure no, just making sure)

No, it does not counter it.

[Jujulautre]

Do you need to reveal the cards you search for with doomsday?

With the current oracle wording:

Search your library and graveyard for five cards and remove the rest from the game. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.

I would say that your opponent see cards you choose in your graveyard, but not the one in your library (it's a private zone). But I'm not sure of it. The question is interesting

If I chain of vapor a meddling mage on tendrills of agony with a aether vial with 2 counters on it and than proceed to cast a tendrills of agony does it resolve or can the opponent somehow stop it?
(stack; chain-both pass-I get priority-cast tendrills correct?)

In the case you present, your opponent can't prevent you from playing tendrills; but your opponent can also copy chain of vapor, and then use that time when you can't play sorceries to put meddling into play

If my opponent cast a meddling mage in response to a brainstorm with a aether vial does it counter the brainstorm yes or no? (almost 100% sure no, just making sure)

No. For the same reason as tendrills, you already played the brainstorm, meddling has no effect on it.

[Nibble]

2. Given that sequence of events, he'll never have priority to vial out the mage. However, if he copies the Chain, he can vial the mage out in response to the copy. You can, of course, copy it right back at the mage. This will end when someone runs out of targets or lands, and the mage may or may not be in play at that point.

Unless he has multiple Vials, Chaining the Mage twice will be plenty. </nitpick>

[Toad]

If the opponent is not dumb, he can Chain back to one of his OWN permanents and manage to keep the Meddling Mage on the board thanks to his Aether Vial without giving the opponent an opportunity to cast Tendrils of Agony.

</nitpick>

[Gabethebabe]

Putting into play the meddling mage again would be useless, but putting into play, for instance, a true believer would stop your tendril copies from being able to target him (in fact they will target the only possible target: you; however you won't die for this anyway).

That is not correct.

If you manage to get a True Believer into play as a response to Tendrils and before the Storm ability resolves, the Storm copies are still allowed to target its original target.

Storm says: you MAY choose new targets. So you can choose not to do this. So in this example you are putting copies of a spell on the stack and those copies target an already untargetable target

[Malhavoc]

Putting into play the meddling mage again would be useless, but putting into play, for instance, a true believer would stop your tendril copies from being able to target him (in fact they will target the only possible target: you; however you won't die for this anyway).

That is not correct.

If you manage to get a True Believer into play as a response to Tendrils and before the Storm ability resolves, the Storm copies are still allowed to target its original target.

Storm says: you MAY choose new targets. So you can choose not to do this. So in this example you are putting copies of a spell on the stack and those copies target an already untargetable target

Hmm.. now I'm not too sure what's the true. Of course you may choose new targets, but shouldn't the old one be legal anyway if you decide not to change targets?  

[Jebus]

The copies go on the stack with the same target as the original spell they copied.  The option to change this is given, but it is not  mandatory even if the target is no longer legal.

The copies would be countered on resolution if that target is no longer legal.

[TracerBullet]

So, the net effect would be the same?  The copies being countered has a net effect of no life gain or loss, with the same result if the copies had been forced to target the spell's caster?

[Jacob Orlove]

If you're worried about the net effect being the same, pretend the storm card is Brain Freeze. You can also replace Vial/Believer with Gilded Light if you want to simplify the question.

[Freelancer]

thanks a lot everyone...Everything is clear now...(the trick with copying the chain is interesting, one off my copies is going to be a echoing truth now   )