- Played to the fleet.
- During the Draw Cards Phase a card is drawn, exposed and placed on the well, then more cards are drawn and placed on the well until a card of greater strength than the first is drawn (to a maximum of 8 cards).
- Cards are out of play and cannot be attacked.
- When research points equal to the strength of the well are applied, cards played on the well are moved into the hand.
- Discarded after use.