To reach it you’ll need to explode a breakable stone barrier inside the tomb. To the left of the trap floor, you’ll find some smashable vases that are blocking your entrance into a small room with some oil vases. Quickly smash the pots and head over to grab an oil vase before the spike floor damages you. Then, use the oil pot to smash the stone wall to reach the artifact.
To destroy the cursed symbol, you’ll need to climb up onto the beams of the church until you reach a tree branch you can stand on. From there, you’ll be able to shoot down the cursed symbol, use Odin’s Sight to pinpoint exactly where it is.
To reach the cursed symbol, which is in a cave below the sync point, you’ll need to shoot the oil vase from an opening on the otherside of the cave to explode the breakable stone wall. Once you’ve done that you’ll be able to head into the cave and destroy the cursed symbol.
This flying paper is found on the banks of the river in Durrow, southwest Meath. You’ll need to follow it along the buildings near the river heading northeast. When you catch it you’ll unlock the Pict Scheme (Torso) tattoo design.