Se7en

There are seven. Seven of us.
I know it 'cause our master told me.
I've meet four, four of us.
And we had already lost a member of our covenant.
So, there are still six of us.
I think we need to find the other two of us
That way we are more powerful.
And we know what to do, and we know how to do it
but what we don't know is when.
Our master never told us.
Thus we wait, till our time come
and our task is done