Storm Star

Storm Star is crafted at Black Forge from Flametal Mace x1, Flametal x8, Iolite x1, Flametal x1.

They are listed above, at every quality level Storm Star reaches. Some of those figures come from Valheim's own item tooltip; the rest — reach, swing arc, combo length, what the secondary attack multiplies — are read from the game files, because the tooltip never shows them.

A swing of Storm Star costs 16 stamina, with a reach of 2.4 m. Stamina is what actually decides a fight in Valheim rather than raw damage: your food sets the pool, and a weapon that costs less per swing keeps you attacking where a heavier one leaves you standing still waiting to recover.

Storm Star blocks 57, and a parry taken on the right frame multiplies that by 2. Both numbers are then scaled by your Blocking skill, so what is listed here is the floor rather than the ceiling.

Storm Star changes your movement speed by -5%. Valheim adds that figure up across everything equipped — both hands, all four armour slots, the utility slot and the trinket — so a heavy set with a shield reaches a number you can feel, and it applies to the stamina that running and jumping drain as well as to speed.

Storm Star has 300–450 durability, and can be repaired for free at a crafting station that covers it — repairing costs nothing but the trip, so there is never a reason to carry a worn one home.