Legendary Pokémon

Hello people.
I have heard of this Item the Metronome (not the move) and it supposdly boosts a move's power when you use it in consecutively. I was wondering if one if you could tell me how much the boost is?

(The Reason I am wondering is because i want to try a moveset with Defense Curl, Rollout/ Ice Ball, and have the Pokemon hold the Metronome. It sounds like a lot of fun. XDDDDDDD)

I haven't heard of that item before...

Metronome raises the power of a move by 10% if used consecutively up to 200%

Thanks guys!

Rollout, Defense Curl and the Metronome are looking even more attractive now.

Once again, Thanks. XD

The power of an attack is increased by 10% on each consecutive use, up to a maximum of +200%. The boosts are lost if the holder uses another attack or switches out.

The boost is only applied on multiple selections of a move, not multiple executions. This means that moves that lock the user into the move for multiple turns will not boost for each time the user attacks, only when they select the move again.

Source: http://www.smogon.com/dp/items/metronome