Celestial Ark [Second Sphere]

Celestial Ship. The celestial ark appears as a huge flying ship that is 80 feet long and 20 feet wide. It has 2 inner levels shaped like the insides of a ship, and creatures inside it have total cover from anything outside the ark. A creature must succeed on a DC 25 Strenght check to forcefully enter the celestial ark, and all attacks hitting the ark from inside are Critical Hits on a hit.

Additionally, it has two semi-organic mounted ballista (AC 15, 50 Hit Points each, same resistances as the ark), one on each of it's side, that can reload and fire on their own. Dealing damage to a ballista doesn't damage the ark itself, but it can make one less attack for each ballista destroyed.

Magic Resistance. The celestial ark has Advantage on saving throws against spells and other magical effects.

Unusual Nature. The celestial ark's creature type is both celestial and construct.

Divine Blessing. The AC of the celestial ark includes its Charisma modifier.

Spellcasting. The casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 16) :

At will : Detect Evil and Good*, Spirit Guardians*

1/day each : Gate* (can only target the plane the ark is currently in)

* Concentration spells

Multiattack. The celestial ark can use its Divine Pulse. It then makes two Organic Ballista attacks.

Organic Ballista. Ranged Weapon Attack: +6 to hit, range 120/480 ft., one target. Hit: 14 (3d8) Piercing damage.

Divine Pulse. Strenght Saving Throw, DC 16, each creature in a 15-foot radius Sphere centered on a point on the ark, Failure : The creature is pushed 15 feet straight away from the ark and has the Prone condition.

Divine Beam (Recharge 5-6). Dexterity Saving Throw, DC 16, each creature in a 150-foot-long, 5-foot-wide Line and in a 20-foot-radius Sphere centered at the end of that line, Failure : 35 (10d6) Radiant damage and the reature has the Blinded condition until the end of it's next turn. Success : Half damage only.