Text(5th+errata): */1+*. ; ~this~'s power is equal to the number of creature
cards in all graveyards, and its toughness is equal to that number plus 1.
[Oracle 2000/02/01]
A "creature card" is a Creature card or Artifact Creature card.
[D'Angelo 1999/05/01] Older cards of type Summon are also Creature cards.