White storm (Pure Erayo Mentorship combo) (Modern)

3 angles of attacks: Mentors, grapeshot, erayo Mentors and Grapeshot are my usual way of winning. Erayo is just there to attract the hate... and it works.

Capable of Turn 2 kills through Grapeshot. Often a turn 4 kill through Mentor.

Comments:
Lands: Yes, only 13 at this point. Doesn't mulligan well. True, true. But it works more often than you think, and after a few mana flood, you'll be thinking why need that many :)
Other threats:

• Riddlesmith was good to help the combo. But I ended up prefering Gitaxian Probes
• Myth Realized was never good
• Thoughtcast is not very good
  Style of play: YOU are the beatdown. Against most decks, going faster is the way to win. The deck is not built for the long game.
  Sideboard:
• against non-interactive decks, you just need to combo faster. Don't try to slow them.
• Against swarm decks (elfs, zoo, guide/swiftspear), a Silence on their 2nd and 3rd turn is awesome.
• Worst matchups are Grixis/Jeskai control. Removal + counter. You NEED silence before going off.
• The plains is very good. Seriously.
• Never switch more than 4 cards with sideboard.
• Paradoxical Outcome for the long game agrainst attrition decks (jund!).
• Runed Halo against the red eidolon. And whatever else you want to slow down.
• Leylines against IoK and Thoughtseize.
• No more Rest in peace. I realized that the graveyard decks are usually not interactive and we can be faster than them.

Initial inspirations:
http://magic.tcgplayer.com/db/article.asp?ID=13055&writer=Craig+Wescoe
http://www.starcitygames.com/article/30695_Daily-Digest-The-Best-Combo-Deck-In-Modern.html