Martian Portal

A Martian Portal is created somewhere in the sky when the Lord of Mars has been defeated, with 4 Martian Tablets elsewhere. One in the Dungeon, One in the Lihzahrd Temple, one on Mars And one in the Ocean. once all of the Tablets are destroyed the portal will open and the Celestial Siege will start.

After the event has finished, the portal will remain open and give you passage to Mars.