Enneapolis - Phantom Revenge

(This card is always treated as an "Enneacraft" card.) Once per turn, during the End Phase: Remove all E.C. Counters from your field, and if you do, your opponent takes 900 damage for each. You can only use each of the following effects of "Enneapolis" once per turn. You can target any number of "Enneacraft" Pendulum Monster Cards you control; return them to the hand. If an "Enneacraft" Pendulum Monster(s) you control is flipped face-up during the Main Phase: You can choose 1 of them and either return it to the hand or place it in your Pendulum Zone.