Skelesaurus (BP03-EN108) [Battle Pack 3: Monster League]

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
? This card becomes EARTH Dinosaur-Type. When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can Special Summon that monster from their Graveyard to your side of the field in face-up Defense Position as a Zombie-Type monster.