MTG Salvation

Does its English name begin with E-R?

Mindless Null

Is it blue or white?

Ice Cauldron

It is Disciple of Griselbrand!

Player Scores
93 Tomsloger
56 Feyd_Ruin
31 canadiangreenberet
30 CTNC
21 pikachugundam
17 Kahedron
14 pokerbob1
13 Necarg
09 reddevils77
08 Unatco
07 deritof
01 Callahan09

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.
Its CMC is 3 or less.
Its power and toughness are each lower than its CMC.
It is an Elf, Goblin, Human, Merfolk, or Zombie.
It is not white or blue.
It has a printed power 2 or less.
It is not a common.
Its printed power is 1.
It is not red or green.
It is not an assassin.
It has an activated ability.
It does not cost at least BB.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor
Ib Halfheart, Goblin Tactician
Fire Juggler
Fire-Belly Changeling
Champion of Lambholt
Exuberant Firestoker
imperious perfect
Flamewave Invoker
Elvish Visionary
Puppet Conjurer
Wight of Precinct Six
Dunerider Outlaw

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.
Its CMC is 3 or less.
Its power and toughness are each lower than its CMC.
It is an Elf, Goblin, Human, Merfolk, or Zombie.
It is not white or blue.
It does have a printed power 2 or less.
It is not a common.
Its printed power is 1.
It is not red or green.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor
Ib Halfheart, Goblin Tactician
Fire Juggler
Fire-Belly Changeling
Champion of Lambholt
Exuberant Firestoker
imperious perfect
Flamewave Invoker
Elvish Visionary

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.
Its CMC is 3 or less.
Its power and toughness are each lower than its CMC.
It is an Elf, Goblin, Human, Merfolk, or Zombie.
It is not white or blue.
It does have a printed power 2 or less.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor
Ib Halfheart, Goblin Tactician
Fire Juggler
Fire-Belly Changeling
Champion of Lambholt
Exuberant Firestoker

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.
Its CMC is 3 or less.
Its power and toughness are each lower than its CMC.
It is an Elf, Goblin, Human, Merfolk, or Zombie.
It is not white or blue.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor
Ib Halfheart, Goblin Tactician
Fire Juggler
Fire-Belly Changeling
Champion of Lambholt

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.
Its CMC is 3 or less.
Its power and toughness are each lower than its CMC.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor
Ib Halfheart, Goblin Tactician
Fire Juggler

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.
It is a creature.
It is modern legal.
It is monocolored.

Incorrect Guesses
Darksteel Colossus
Fire Elemental
Tarmogoyf
Jace, the Mind Sculptor

Neither the word "three" nor the numeral 3 appear in its mana cost, text box, power or toughness.

Incorrect Guesses
Darksteel Colossus

I'm thinking of a card...

Spike, you can wrap a card name in

[c][/c]

tags to generate an auto hotlink.

Is its converted mana cost 5?

Not of This World

Is it Green?

Ghostfire

Is its converted mana cost 3 or less?

Ancestral Visions

Maybe I'm missing something, but I don't see any UR or UG CMC 3 or less instants that aren't rare, and aren't legal in modern.

http://magiccards.info/query?q=cmc%3C4+c%3Aum+%28c%3Ag+or+c%3Ar%29+t%3Ainstant+-r%3Arare+-f%3Amodern&v=card&s=cname

Edit: going to go ahead and guess you most likely got the instant/sorcery part wrong.

Is it green? (which should be helpful anyways)

Squee's Revenge