Thunder Dragon's Lightning Round

The is a SS: in SS undefined, which becomes available after giving Lanayru the Life Tree Fruit.

Features
The Thunder Dragon's Lighting Round is, as its name implies, a challenge that Lanayru presents to Link. The objective of the challenge is to either complete all 9 (12 in Hero Mode) boss battles or all of the Silent Realm challenges. Only the boss battles exclusive to the final part of the game (the Horde, Ghirahim's third encounter, and Demise), are exclusive to Hero Mode.

In Hero Mode, all 12 battles are available as soon as the mini-game is unlocked.

Boss Battles
If Link chooses to replay Boss battles, he must face all of the Bosses in succession of each other without the use of bottled items. The only items Link will be able to use are the items he had at the time he fought each boss and whichever Shield he is currently equipped with, though the effects of the Stamina Potion, Guardian Potion, and Air Potion will persist through the fights, if any of these are consumed before starting the Lightning Round. The potions' bonuses will last until their timer runs out. At the start of the round, the young hero will be able to choose the first Boss battle. Then the Thunder Dragon will choose the next battle depending on how well Link performed in the battle.

The first time Link defeats a given Boss through the Lightning Round, and each time Link beats his record time thereafter, Lanayru will automatically reward him with 50 Rupees. If Link dies, he will only receive the Rupees he has earned by beating his best times.

Silent Realm
If Link chooses the Silent Realm challenge, he will have the option of which Silent Realm to start with. The young hero can earn between 5 to 100 Rupees depending on his performance.