The Black Goat Laughs

Declare 1 Monster Card name; this turn, neither player can Special Summon monsters with that original name, except from the GY. You can banish this card from the GY, then declare 1 Monster Card name; this turn, neither player can activate the effects of monsters on the field with that original name. You can only use 1 “The Black Goat Laughs” effect per turn, and only once that turn.