Volrath, the Shapestealer

If Volrath becomes a copy of a legendary creature you control, you'll put one of them into your graveyard.

If another object becomes a copy of Volrath, it has the ability to become a copy of something else and it's 7/5.

If Volrath copies a creature the same turn Volrath enters the battlefield, you can't attack with it or use any of its {T} abilities (if it gains any) unless the copied creature has haste.

If an effect begins to apply to Volrath before it becomes a copy of another creature, that effect will continue to apply.

Volrath copies the printed values of the target creature, plus any copy effects that have been applied to it. It won't copy counters on that creature. It also won't copy any effects that have changed its power, toughness, types, color, or so on. Notably, it won't copy effects that made the target become a creature if it's not normally a creature.

If the target creature is a token, Volrath copies the original characteristics of that token as stated by the effect that created the token. Volrath doesn't become a token in this case.