Answers
19.Yes, it is red, green or white.
18.Yes, it is extended legal.
17.Yes, it is standard legal.
16.No, it's not mono color.
15.No, it's not in the Shards of Alara Block.
14.No, it's not a permanent.
13.No, it's not rare.
12.No, it's not in the Lorwyn Block
11.No, it doesn't have converted mana cost greater than 2.
10.No, it's not on Shadowmoor Set.
9.Yes, it is an instant.
8.No, it's not blue.
7.No, it's not green
6.Yes, it has a converted mana cost of 1.

Incorrect Guesses
Ankh of Mishra
Wrath of God
Wooly Thoctar
Hill Giant
Heartmender
Apocalypse Hydra
Call the Skybreaker
Tarfire
Unmake
Firespout
Torrent of Souls
Double Cleave
Manamorphose
Batwing Brume

Does it contain "Target Creature" in it's rules text?

Beckon Apparition

We have a winner! innuendo gets on the scoreboard with Beckon Apparition.

Ulxiz - 9
innuendo - 6

You are now "it". Now, you may choose the next card.

It was down to beckon or scar at that point in the questioning, I was so worried it would be the other one!

I'm going to suck at this since I don't follow these rules stuff, but...

What card am I thinking of?

Is it a permanent?

Force of Will

Does it have a keyword?

Serra Angel

Innuendo: It couldn't have been the other one. Scar was in Shadowmoor - you had a choice of 1!

(told you I'll suck at this!)

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword

Incorrect Guesses:
Force of Will
Serra Angel

Aww, innuendo got the mythic rare. Oh well.

Is it red, white, or blue?
Fomori Nomad

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad

Is it extended legal?

Abomination

Is it an artifact or land?
Masked Admirers

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue
16. No, it's not extended legal
15. No, it's not an artifact or land

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad
Abomination
Masked Admirers

Is it a creature?
Pernicious Deed

Is it common?
Manabond

It has converted mana cost 3 or more?

Forgotten Ancient

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue
16. No, it's not extended legal
15. No, it's not an artifact or land
14. No, it's not a creature
13. No, it's not common
12. No, it's converted mana cost is not 3 or more

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad
Abomination
Masked Admirers
Pernicious Deed
Manabond
Forgotten Ancient

Is it green?
Squandered Resources

Is it an aura?

Cocoon

Is it dealing with graveyard?
Sarcomancy

Alex that is too vauge to answer, please rephrase it more conretely

All questions before his:

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue
16. No, it's not extended legal
15. No, it's not an artifact or land
14. No, it's not a creature
13. No, it's not common
12. No, it's converted mana cost is not 3 or more
11. No, it's not Green
10. No, it's not an aura

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad
Abomination
Masked Admirers
Pernicious Deed
Manabond
Forgotten Ancient
Squandered Resources
Cocoon

I guess we can say as "Does it have the word "graveyard" on it?"

I figured that's what he meant, but we'll wait for his clarification

Anyway, ince i can't edit my last post:

Does it name begins with one of the letters from A to L?

Liliana Vess

Sorry, I mean "is it mentioning graveyard on the text?"
Sarcomancy

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue
16. No, it's not extended legal
15. No, it's not an artifact or land
14. No, it's not a creature
13. No, it's not common
12. No, it's converted mana cost is not 3 or more
11. No, it's not Green
10. No, it's not an aura
9. Yes, it's name begins with a letter A-L
8. Yes, it's rules text contains the word "Graveyard

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad
Abomination
Masked Admirers
Pernicious Deed
Manabond
Forgotten Ancient
Squandered Resources
Cocoon
Liliana Vess
Sarcomancy

Does it mentions a P/T in it's rule text? (Not +1/+1 things; I mean thing like "target creature becomes 1/1 until end of turn.)

Lurking Skirge

Is its mana cost exactly 1B?
Gate to Phyrexia

I forgot about Lurking Skirge, and there's nothing else I can think of that fits the bill. Gate to Phyrexia has the word "graveyard" only on the printed card, but not in the Oracle wording.

Answers:
19. Yes, it's a permanent
18. No, it does not have a keyword
17. No, it is not Red, White, or Blue
16. No, it's not extended legal
15. No, it's not an artifact or land
14. No, it's not a creature
13. No, it's not common
12. No, it's converted mana cost is not 3 or more
11. No, it's not Green
10. No, it's not an aura
9. Yes, it's name begins with a letter A-L
8. Yes, it's rules text contains the word "Graveyard"
7. No, it does not mention a P/T in it's text
6. Yes, it's mana cost is Exactly 1B

Incorrect Guesses:
Force of Will
Serra Angel
Fomori Nomad
Abomination
Masked Admirers
Pernicious Deed
Manabond
Forgotten Ancient
Squandered Resources
Cocoon
Liliana Vess
Sarcomancy
Lurking Skirge
Gate to Phyrexia

::

By my logic there are only 2 cards it could be at this point

Is it Chains of Mephistopheles?

I guess that leaves me with Is it Bereavement?

Is it from Urza Block?
Oath of Ghouls

Idle Muse would be the winner!

So the scoreboard now looks like:

Ulxiz - 9
innuendo - 6
Idle Muse - 6

Okay, awesome

I am thinking of a card... what is it?

20 questions remaing, no guesses made.

Is it green, white, or blue?
Circle of Protection: Red

20. Is it green, white, or blue? Yes

Incorrect Guesses:
CoP: Red

Is it common or uncommon?

Nimble Mongoose

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes

Incorrect Guesses:
CoP: Red
Nimble Mongoose

Is it extended-legal?
Tower Gargoyle

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes
18. Is it extended-legal? No

Incorrect Guesses:
CoP: Red
Nimble Mongoose
Tower Gargoyle

Does it have a CMC of 2 or less?
Ancestral Recall.

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes
18. Is it extended-legal? No
17. Does it have a CMC of 2 or less? Yes

Incorrect Guesses:
CoP: Red
Nimble Mongoose
Tower Gargoyle
Ancestral Recall

Is it a permanent?
Brainstorm

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes
18. Is it extended-legal? No
17. Does it have a CMC of 2 or less? Yes
16. Is it a permanent? Yes

Incorrect Guesses:
CoP: Red
Nimble Mongoose
Tower Gargoyle
Ancestral Recall
Brainstorm

Is it a creature?
Spindrift Drake

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes
18. Is it extended-legal? No
17. Does it have a CMC of 2 or less? Yes
16. Is it a permanent? Yes
15. Is it a creature? Yes

Incorrect Guesses:
CoP: Red
Nimble Mongoose
Tower Gargoyle
Ancestral Recall
Brainstorm
Spindrift Drake

Is it has power greater than 2?
Order of Leitbur

Is it white?
Scryb Sprites

20. Is it green, white, or blue? Yes
19. Is it common or uncommon? Yes
18. Is it extended-legal? No
17. Does it have a CMC of 2 or less? Yes
16. Is it a permanent? Yes
15. Is it a creature? Yes
14. Does it have power greater than 2? No
13. Is it white? Yes

Incorrect Guesses:
CoP: Red
Nimble Mongoose
Tower Gargoyle
Ancestral Recall
Brainstorm
Spindrift Drake
Order of Leitbur
Scryb Sprites

Is it has a keyword?
Warrior en-Kor