About Emrakul and some other eldrazi

[Gokusupersaiya3]

Question 1: since Emrakul have colored spells protection, can someone play a stifle when I cast it to prevent me from taking and extra turn?

Question 2: most of the Eldrazi have a trigger ability when you cast it, since it does not says "fulfilled cast" I wonder, if I cast a Kozilek and it gets countered does the trigger ability resolves? I wonder cause I understand by "casting" paying the mana cost for the spell, and for "fulfilled cast" to pay the mana cost and the spell resolves.

Help please! I am pretty sure my friends have been bullying me with this lol

[Cender]

Question 1: since Emrakul have colored spells protection, can someone play a stifle when I cast it to prevent me from taking and extra turn?

Question 2: most of the Eldrazi have a trigger ability when you cast it, since it does not says "fulfilled cast" I wonder, if I cast a Kozilek and it gets countered does the trigger ability resolves? I wonder cause I understand by "casting" paying the mana cost for the spell, and for "fulfilled cast" to pay the mana cost and the spell resolves.

Help please! I am pretty sure my friends have been bullying me with this lol

Question 1: {Emrakul, the Aeons Torn} has protection from colored spells himself. But his triggers do not. Therefore, {Stifle} could remove any triggers resulting from the casting of Emmy.

Question 2: If we take a look at {Kozilek, Butcher of Truth}, the key is in the phrasing "When you cast Kozilek... draw four cards."

601.2. To cast a spell is to take it from where it is (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect. Casting a spell follows the steps listed below, in order. If, at any point during the casting of a spell, a player is unable to comply with any of the steps listed below, the casting of the spell is illegal; the game returns to the moment before that spell started to be cast (see rule 717, "Handling Illegal Actions"). Announcements and payments can't be altered after they've been made.

A trigger that is created upon casting actually would resolve on top of the stack before Kozilek himself would ever resolve. Also Keep in mind that using {Show and Tell} or {Sneak Attack} to "cheat" Kozilek into play would not result in getting the "cast" effect.

[Cender]

Can counter Emmy because her protection doesn't kick in until she is on the battlefield.

Lazy lets you draw as long as you paid to cast even if countered.

Ulamog kills something even if he doesn't make it into play himself.

Sure colored spell protection doesn't kick in, but "can't be countered" does