Celestian's Cosmic Gateway is a powerful spell granted by the cosmic deity Celestian, the Far Wanderer. It allows the caster to create celestial portals, enabling a ship to travel instantaneously to known Wildspace systems it has visited before.
To cast this spell, you must be aboard a spelljamming ship with a functioning helm, and you must have previously visited the destination system and created a map of the stars as a point of reference. The spell requires the cooperation of at least one other willing creature aboard the ship who assists in channeling the cosmic energies.
When you cast this spell, you and the assisting creature touch the ship's hull and concentrate for 1 minute, opening a shimmering, starlit portal. Once the portal is open, you can name a Wildspace system that the ship has visited before. The ship can then pass through the portal and emerge instantaneously in the chosen system, regardless of the distance.
The portal remains open for 8 hours, allowing the ship to travel back and forth between the two systems as needed during that time. After the duration ends, the portal closes, and the ship returns to regular spelljamming travel rules.
While the portal is open, the ship can navigate at its normal speed, and it is unaffected by hazards or encounters that might usually occur during a voyage. However, the ship is not concealed while using this method of travel, and other spelljamming vessels might be able to detect the cosmic gateway.
* - (A crystal sphere that shows the stars)
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