Condition Inherent

COUNT Range:All FROM Area:Grave, Side:Player, Attr:Dark, Different:Name IS >= 4

Action Inherent Optional
REDEFINE Me CAUSE Method:Tribute Summon TO
MOVE Range:1 FROM Area:Monster, Attr:Dark, Side:Player TO Area:Grave CAUSE Method:Tribute CAUSE Method:Tribute Summon

Cost Ignition

MOVE Range:1 FROM Area:Hand, Attr:Dark TO Area:Grave CAUSE Method:Send

Action Ignition
MOVE Range:All FROM Area:Monster, Side:Opponent TO Area:Grave CAUSE Method:Destroy
Condition Trigger
Action Trigger
MOVE Me FROM Area:Monster, Face:Up TO Area:Grave CAUSE Method:Destroy