Darksence Prisoner (Zazu Zingle-ish)

[Zazubat]

This card's another from my Archetype, though since it isn't Archetype specific, I thought I might as well post it, and that way I can promote my Archetype as well ;) Link here.

 

If the only monsters in your Graveyard are DARK monsters, during the Battle Phase: You can Tribute 1 monster you control whose effects are negated; Special Summon this card from your hand, and if you do, you can negate the effects of all other monsters on the field, except when they are battling. Your opponent cannot banish monsters from either player’s Graveyard, except by monster effects that activate during the Damage Step.