While attached, Smaug the Magnificent gets -3 
.
Response: After the players quest successfully, the first player makes a burgle attempt. If successful, attach A Bare Patch to Smaug the Magnificent.
"Old fool! Why there is a large patch in the hollow of this left breast as bare as a snail out of its shell!
—Bilbo Baggins, The Hobbit
6
9
20
Indestructible. Immune to player card effects
X is the number of non-Burglar characters committed to the quest.
Forced: After the 6th progress token is placed here, the players advance to stage 4A.
8
8
20
Indestructible. Immune to player card effects.
Cannot leave the staging area (except by quest effect) but is considered to be engaged with the first player.
Forced: If Smaug the Magnificent is dealt a shadow card with a burgle effect, he makes an additional attack immediately after this one.
1
1
2
Forced: When a location is revealed from the encounter deck, put 1 progress on Smaug the Golden.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 1 card from his hand that matches the revealed card's sphere and type.
While at least 1 card is stacked underneath, The Lonely Mountain is immune to player card effects, cannot leave the staging area, and gets -2 for each card stacked under it.
Action: While making a burgle attempt, the first player may spend 2 
resources to take the revealed card into hand and reveal the next card of his deck.
While Great Hall is the active location, it gains: "Forced: Put 1 progress on Smaug the Golden at the end of each round."
Burgle: The first player shuffles his deck and reveals the top card. He may discard 3 cards from his hand that match the revealed card's type.
While Secret Entrance is the active location, The Lonely Mountain's is reduced by half (round up).
Travel: The first player must exhaust a hero and name a card type to travel here. Then, look at the top card of the encounter deck. If the looked at card is not the named type, return Secret Entrance to the staging area. (The players cannot travel again this round.)
While Desolation of Smaug is the active location, the first treachery card revealed each round gains surge.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 2 cards from his hand that match the revealed card's cost.
Response: When Western Slopes leaves play as an explored location (choose one): the first player draws 2 cards, or remove 1 progress token from Smaug the Golden.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 2 cards from his hand that match the revealed card's sphere.
When Revealed: Put 1 progress token on Smaug the Golden. Then, spend X resources or advance to stage 4A. X is the number of progress tokens on Smaug the Golden.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 2 cards from his hand that match the revealed card's type.
When Revealed: Each player discards 2 random cards from hand. Until the end of the phase, each Dragon enemy in play gets +1 for each event discarded by this effect.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 1 card from his hand that matches the revealed card's sphere and cost.
When Revealed: Each Dragon enemy in the staging area makes an immediate attack against the player with the highest total 
committed to the quest. (Do not deal a shadow card for this attack.)
Burgle: The first player shuffles his deck and reveals the top card. He may discard 1 card from his hand that matches the revealed card's type and cost.
When Revealed: Attach to the hero with the most resources without Dragon-Spell attached. (Counts as a Condition attachment with the text:
"Attached hero gets -1 for each resource in its resource pool.
Forced: When attached hero spends resources, attached hero takes X damage. X is equal to the number of resources spent.")
Setup: Search the encounter deck for Smaug the Golden, Smaug the Magnificent, The Lonely Mountain and A Bare Patch. Set Smaug the Magnificent and A Bare Patch aside, out of play. Add Smaug the Golden and The Lonely Mountain to the staging area. Shuffle the five Erebor treasure cards and stack them facedown under The Lonely Mountain.
Skip the Quest phase.
Forced: At the end of the round, advance to stage 2.
So one day, although autumn was now getting far on, and winds were cold, and leaves were falling fast, three large boats left Lake–town, laden with rowers, dwarves, Mr. Baggins, and many provisions. –The Hobbit
There he lay, a vast red–golden dragon, fast asleep; thrumming came from his jaws and nostrils, and wisps of smoke, but his fires were low in slumber. Beneath him, under all his limbs and his huge coiled tail, and about him on all sides stretching away across the unseen floors, lay countless piles of precious things, gold wrought and unwrought, gems and jewels, and silver red–stained in the ruddy light. –The Hobbit
Forced: After questing successfully, place 1 progress on Smaug the Golden. Then, he first player makes a burgle attempt. If successful, the first player takes the top card from under The Lonely Mountain into his hand. Then, the players may advance to stage 3.
Forced: After the first player makes an unsuccessful burgle attempt, Smaug the Golden attacks the first player.
They debated long on what was to be done, but they could think of no way of getting rid of Smaug – which had always been a weak point in their plans, as Bilbo felt inclined to point out. – The Hobbit
When Revealed: Set Smaug the Golden aside, out of play. Add Smaug the Magnificent and A Bare Patch to the staging area.
Players cannot defeat this stage while Smaug the Magnificent is in play.
Forced: If the total number of progress on this stage is greater than the total remaining hit points on Smaug the Magnificent, remove Smaug the Magnificent from play.
If the players defeat this stage, they have won the game and discovered any treasure successfully burgled from The Lonely Mountain.
He issued from the Gate, the waters rose in fierce whistling steam and up he soared blazing into the air and settled on the mountain–top in a spout of green and scarlet flame –The Hobbit
When Revealed: Remove all progress from Smaug the Golden and set him aside, out of play. Then, add Smaug the Magnificent to the staging area.
Forced: After placing the 7th progress token on this stage, remove all damage from Smaug the Magnificent and set him aside, out of play. Then, add Smaug the Golden to the staging area and reset the quest deck to stage 2B.
To hunt the whole mountain till he had caught the thief and had torn and trampled him was his one thought –The Hobbit