What is a dream ball?

Question

could you put a picture please?

Answer 1

A Dream Ball allows you to catch Pokemon that you have met in the Dream World. It "appears out of nowhere" it your Bag and can only be found in the Entralink. Here's a picture:

It has a 255x catch rate, the same as a Master Ball.

Source

This website allows access to the Pokemon Global Link, which can be used to access the Dream World. You'll need a copy of Black, White, Black 2 or White 2 which is connected to the internet.

Comments

thanks guys

Answer 2

The Dream Ball (ドリームボール Dream Ball) is a Poké Ball introduced in
Generation V that is only usable within the Dream World and Pokemon
from the dream radar. The pattern of this ball is similar to Musharna.
Like the Master Ball and Park Ball, it never fails to catch a Pokémon.
It can only be used in the Entree Forest in the Entralink. Its
distinctive pattern marks that the Pokémon within was caught in the
Dream World, not the wild.

http://pokemon.wikia.com/wiki/Dream_Ball_(Pokéball) has the pic