Forum:Dark armed dragon help

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by having exactly 3 DARK monsters in your Graveyard. You can remove from play 1 DARK monster from your Graveyard to destroy 1 card on the field...... do i have to have exactly 3 dark monsters in my graveyard to summon dark armed dragon?? or can i have more than 3 dark monsters and still be able to special summon it?