C# - Create an EventHandler that can take any number of parameters

I wish to create a custom EventHandler that can have any number of objects as its parameters and the objects it gets isn't known in advance.

I know I can pass it an Object[] but what I would like is something similar to

MyEventHandler someCustomEvent(Object obj1, Object obj2, Object obj3)

where the number of objects can be 0 or 10 if needed.

EDIT:

So thanks to the comments and answers I've got I've come to this,

public class FinishedEventArgs : EventArgs {
            public Object[] Args{ get; set; }
        }

protected void OnFinished(params Object[] args) {
            if(this.Finished != null) {
                this.Finished(this, new FinishedEventArgs() {
                    Args = args
                });
            }
        }

Does it look acceptable?