Yes, if he casts the Incinerate during the Declare Blockers step after Snapcaster Mage has been declared as a blocker, the Wurmcoil Engine will stay blocked but deal no damage, so you will gain no life. This has nothing to do with the rules change about combat damage.
If you want to keep the card exiled with Mesmeric Fiend, you have to sacrifice it while its exile trigger is on the stack.
So you cast Mesmeric Fiend, it enters the battlefield and its exile ability triggers. In response to the trigger (while it is still on the stack), you sacrifice it. Now its leaves play ability triggers. The stack looks like this:
Top
Leaves play ability
Exile ability
Bottom
The leaves play ability resolves, doing nothing, and then the exile ability resolves, exiling the creature you wanted to exile.
The same is true for Oblivion Ring: you have to bounce it in response to its ETB ability.
If you want to use Sundial of the Infinite, you have to wait until the Mesmeric Fiend or the Oblivion Ring leaves play, and then respond to the leaves play ability by ending the turn.
Any time something is on the stack, both players must pass priority in succession in order for it to resolve. So you can respond to Bitterheart Witch's trigger by removing your opponent's only curse from his library. The triggered ability will still resolve, however, allowing him to search his library (finding nothing) and shuffle it.
Combat damage does not go on the stack, so you cannot respond to damage being dealt. But abilities that trigger after damage is dealt can be responded to, because they do use the stack.
As long as you can agree on which cards are allowed to play with, there's nothing wrong with restricting the list of allowed cards for casual play. Wizards is going to make mistakes from time to time and that's just the nature of the business, and I can certainly understand why you would want to "ban" a card. But as has been pointed out, you don't have to buy their cards or play with them if you don't like what they're doing with the game.
Self mill is very good if you're playing a deck that uses a lot of the creatures that require you to exile creature cards from the graveyard in order to play them. Armored Skaab is fine because it's a decent creature without the milling ability but it's really good when you're trying to fill up the graveyard with dudes. I wouldn't play a card if all it did was mill because there are better choices, but see Deranged Assistant for a good self-milling card. It's good even if you're not trying to mill yourself because it gives you the ability to ramp in blue.
Assuming you both want to imprint it, it depends on whose turn it is. The Mimic Vat triggers will be placed on the stack in APNAP order (active player/non-active player). So if it is your opponent's turn, his trigger will go on first and then yours. Yours will resolve first, as it is on top of the stack. So if it is his turn, you will imprint the creature and his trigger will do nothing. If it is your turn, then he will imprint the creature and your trigger will do nothing. Note that imprinting a creature on Mimic Vat is a "may" ability, so if the player with the first trigger passes on the opportunity, the second player will have a chance.
No, you can't. The Flashback cost of Fireblast will be equal to its mana cost, which is 4RR. This means you can cast the spell from your graveyard by paying 4RR. You can't do it any other way because Flashback gives the card an alternate casting cost and you must pay that cost in order to cast the spell from your graveyard.
We (Christians) implicitly accept that God is good. Others argue that we can't prove it, but we don't have to prove it. In mathematics, certain truths are accepted as axiomatic and therefore fundamental. In mathematics, you must begin with something which is understood implicitly before you attempt to prove anything. It is the same with all logical arguments. How is it that we can determine whether an argument is logically sound? If we didn't understand logic implicitly, we wouldn't be able to make such a determination. Implicit in all the atheist arguments is the fundamental belief that God does not exist so all of their arguments are predicated on that. However, who is right?
Censorship and free speech are antithetical. One is part of our constitution, the other is not, and that's the way it should be. I saw Terminator 2 for the first time when I was 9 years old and it didn't traumatize me. I was reading adult literature when I was in middle school and I wish I hadn't been exposed to it at that point because I wasn't mature enough to understand it but I don't necessarily think that I should be prevented from reading it by anyone except my parents. It is the parents' responsibility to ensure the development of their children and I am tired of other people trying to step in and treat us like we're all children and tell us what we can and cannot say.
And proceeded to attack for 8 - 4 - 8 for the win over all of the opposing blockers.
These two cards interact well together. It's unfortunate that you can't attack with the Geist on the turn the Angel brings it back from the graveyard. I actually had this combo and my opponent killed my Angel after a sacrifice attack from the Geist, keeping both in the graveyard permanently as I had no way of retrieving them.
My question is similar, what if you bounced Angelic Destiny with Venser, the Sojourner or Glimmerpoint Stag. When it reenters the battlefield, it doesn't target, so could it successfully be placed on the dragon?
Yes, when Angelic Destiny enters the battlefield in either of those cases you may attach it to the Dragon for the reason you stated. You could also move it from some other creature to the Dragon with Glamer Spinners, because that ability doesn't target the Dragon either.
So you cast Mesmeric Fiend, it enters the battlefield and its exile ability triggers. In response to the trigger (while it is still on the stack), you sacrifice it. Now its leaves play ability triggers. The stack looks like this:
Top
Leaves play ability
Exile ability
Bottom
The leaves play ability resolves, doing nothing, and then the exile ability resolves, exiling the creature you wanted to exile.
The same is true for Oblivion Ring: you have to bounce it in response to its ETB ability.
If you want to use Sundial of the Infinite, you have to wait until the Mesmeric Fiend or the Oblivion Ring leaves play, and then respond to the leaves play ability by ending the turn.
Any time something is on the stack, both players must pass priority in succession in order for it to resolve. So you can respond to Bitterheart Witch's trigger by removing your opponent's only curse from his library. The triggered ability will still resolve, however, allowing him to search his library (finding nothing) and shuffle it.
Combat damage does not go on the stack, so you cannot respond to damage being dealt. But abilities that trigger after damage is dealt can be responded to, because they do use the stack.
No, you can't. The Flashback cost of Fireblast will be equal to its mana cost, which is 4RR. This means you can cast the spell from your graveyard by paying 4RR. You can't do it any other way because Flashback gives the card an alternate casting cost and you must pay that cost in order to cast the spell from your graveyard.
These two cards interact well together. It's unfortunate that you can't attack with the Geist on the turn the Angel brings it back from the graveyard. I actually had this combo and my opponent killed my Angel after a sacrifice attack from the Geist, keeping both in the graveyard permanently as I had no way of retrieving them.
Yes, when Angelic Destiny enters the battlefield in either of those cases you may attach it to the Dragon for the reason you stated. You could also move it from some other creature to the Dragon with Glamer Spinners, because that ability doesn't target the Dragon either.