VG i a great card. but i dont get the effect:(.....can someone help me

This means that the ONLY way to summon it is by removing 1 Vampire Lord from your side of the field from play. Then you discard ANY Zombie-Type monster from your hand and summon a LOWER level Zombie from your grave.

Vampire Genesis
Dark/Zombie/8/3000/2100
This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing 1 "Vampire Lord" on your side of the field from play.

This part of the effect means that you CANNOT Special Summon it in ANY other way except by removing Vampire Lord from your own side of the field from play. Even if you properly Special Summon it and it gets sent from the field to the Graveyard or removed from play, you CANNOT use Premature Burial, Call of the Haunted, Dimension Fusion, etc to Special Summon it back to the field. You would have to use a card to get it back to your hand or Deck and then resummon it from your hand by removing another Vampire Lord from your field from play



Discard 1 Zombie-Type monster from your hand to the Graveyard to select and Special Summon 1 Zombie-Type monster from your Graveyard with a Level less than the discarded Zombie-Type monster. You can only use this effect once per turn.

This means you can discard any Zombie-Type monster from your hand to your Graveyard to Special Summon 1 Zombie-Type from your Graveyard with a LOWER level than the one discarded (note that it MUST be lower and not equal to or lower). It does not mean exactly 1 Level lower, just any level as long as it's lower. However, you CANNOT bring back Zombie's that are Nomi or have Special Summon requirements that were simply discarded (like if you discarded Fushioh Richie with Magic Jammer without properly Special Summoning it, you can't use Vampire Genesis' effect to bring it back).

Example being that you can discard Despair from the Dark (Level 8) and Special Summon a Zombie from your Graveyard ranging from Level 1-7.