Richard, Echo of Vengeance

When Richard, Echo of Vengeance enters the battlefield, if it was cast, create a token copy of it, except that token is named Cedric, Fallen Longbranch, and it is a spirit in addition
to it is other types.
Discard a card: This creature gets +X/+0,
where X is the mana value of the card you
discarded to activate this ability.
Activate this ability only once each turn.