Okay, Fenny... I think you and I are sick of this little dragon by now. It's special attack is down... so no more surfs and water attacks should hurt you so badly, so let's fight without fear! Let's take him down once and for all on this round!
First, while he's relaxing let's shake him up and use Dragon Rage to make him pay! Then wait for that little dragon to start relaxing to he can't pull off a Hyper Beam in time and startle him with another Dragon Rage! If Dratini hasn't been finished off by then, use Secret Power to counter his and take advantage of that special attack downfall! If he has fainted, then relax to gather your energy.

Dragon Rage --> Pause/Dragon Rage --> Secret Power/Relax