Malevolent Mech - Goku En (LCJW-EN207) - Legendary Collection 4: Joey's World 1st Edition

You can Normal Summon this card without Tributing. If you do, this card is sent to the Graveyard during the End Phase if it is the only Zombie-Type monster on the field. When it is sent to the Graveyard by this effect, you take damage equal to its ATK.