Sacrificial Stone(Eikthyr) is a other item in Valheim. Its in-game item ID is BossStone_Eikthyr, which you can drop into the console with spawn BossStone_Eikthyr to give yourself one — append a number like spawn BossStone_Eikthyr 50 to spawn a stack. Eikthyr's Sacrificial Stone is the Forsaken Altar in the Meadows where Eikthyr is summoned. Placing two Deer trophies on the stone summons the first boss; after the kill, the Eikthyr trophy can be hung here to claim his Forsaken power. The spawn command requires cheats — enable them with devcommands after opening the console.
Spawns one Sacrificial Stone(Eikthyr) at your location.
Spawns one Sacrificial Stone(Eikthyr) at your location.
Spawns five Sacrificial Stone(Eikthyr) at your location.
Spawns twenty Sacrificial Stone(Eikthyr) at your location.
Eikthyr's Sacrificial Stone is the Forsaken Altar in the Meadows where Eikthyr is summoned. Placing two Deer trophies on the stone summons the first boss; after the kill, the Eikthyr trophy can be hung here to claim his Forsaken power.