[Gameplay] Shaco can make the Dragon stop attacking.

By using a dash or blink to reposition yourself closer to the dragon than your box, after the Dragon has initiated his attack and having the box expire before the dragon's attack completes, you can force the Dragon to just stop attacking until gets a new target (i.e. someone gets closer to him)

Reproduction steps:

1. Lay a box outside of the activation range for the Dragon.
2. Aggro the Dragon and pull him into the box.
3. After the Dragon begins his animation to attack the box a second time, use Deceive to blink closer to the Dragon the the box (He should turn towards you).
4. Have the box expire before the Dragon's attack completes.
5. Have a staring contest with the now friendly Dragon.

Theoretically this isn't unique to Shaco, and that anyone with duration based pets (Yorick, Annie, Zyra, etc) could pull it off. It is just easiest with Shaco as the boxes last almost the perfect duration.

Edit: Works with Annie & Heimerdinger as well, so it does work in any scenario where the Dragon's target despawns / dies before the attack goes off (after another target gets closer than the original target).