Spiegel, the splitting one

{x}{b}{u}: Create a token that's a copy of
target creature
in the battlefield with a converted mana cost of X, except it's named Spiegel, the splitting one that's legendary and a shapeshifter in addition to its other types. it has this ability.
Whenever a creature enters the battlefield,
you may activate Spiegel, the splitting one's ability
without paying it's mana cost