Most annoying instant win

[MageBones]

 {Curse of Exhaustion} +  {Possibility Storm} or  {Knowledge Pool}. Not quite instant, but it puts players in lockdown.

[AeturnitasMalus]

1st turn, opponent plays first. He plays a mountain,  {Lotus Petal},  {Dark Ritual}x2,  {Raging Goblin},  {Hatred}, pays 19 life on hatred.  There were no words.

[Vampyvyrus]

I like using  {Leyline of the Void}+ {Helm of Obedience} because of the chance to have leyline out for free at the beginning of the game and it works in mono black. Though without that effect  {Rest in Peace} is far better especially if you not running mono black.

My deck I'm putting together (in casual forum under "game ender") runs sanguine bond+exquisite blood, helm of obedience+leyline of the void, dark depths+vampire hexmage.

[Redrighthand]

{Blast of Genius} +  {Thunderous Wrath}
Coupled with two 1/5s who when you play an instant (blast) they become 5/1s instant 19 damage if they can't block.
This is why I have respect for Izzet.
And  {Goblin Electromancer} never hurts

{Guttersnipe} helps make this nasty too. Also works well with  {Gelectrode}

[Gorzo]

This makes me want to {Blast of Genius} an {Emrakul, the Aeons Torn}.

[Destore117]

This makes me want to {Blast of Genius} an {Emrakul, the Aeons Torn}.

I have a question.  If you play  {Goblin Electromancer} and then any card. For instance  {Emrakul, the Aeons Torn}
Wouldn't it do less damage as the electromancer reduces its mana cost for you? {Blast of Genius} doing the converted mana cost? I'm not completely sure how cmc works.

[Destore117]

Oh ok. I thought if like you had stuff that reduced mana cost the damage would be reduced as its mana cost went down for you.

[Mlerner12]

{rest in peace} + {helm of obedience}

That's a nice one too.

MILL

[Mlerner12]

This makes me want to {Blast of Genius} an {Emrakul, the Aeons Torn}.

THEY WILL BURN
MUAHAHAHA

[Mlerner12]

1st turn, opponent plays first. He plays a mountain,  {Lotus Petal},  {Dark Ritual}x2,  {Raging Goblin},  {Hatred}, pays 19 life on hatred.  There were no words.

That is greatr.