When you cast this spell on a weapon you're touching, you make it incredibly sharp by reducing one of its physical dimensions to an infinitesimally small measurement. This blade can slash through matter with as much effort as it takes to wave a stick through a sword, including being able to carve stone and iron to pieces with ease. You're able to cast this on any nonmagical handheld weapon or ammunition that deals slashing or piercing damage.
Against creatures, the dimensional blade ignores any portion of the enemy's Armour Class which is derived from the armour that they are wearing (including shields), however magical adjustments continue to affect the opponent's AC. For example, a warrior wearing Half Plate, +2 with a Dexterity of 17 and wielding a shield usually has an AC of 21, however against the dimensional blade the enemy only has an AC of 15. Monsters with thick or toughened hides, such as dragons, may lose part of their AC at the DM's discretion.
The dimensional blade gains a +2 bonus to attack and damage rolls in any event and gains the finesse property. The dimensional blade is also very effective against inanimate objects. Any object with a diameter or thickness smaller than the blade's length can be cleanly severed in twain if the wielder of the blade makes a Dexterity check, with a DC of 16, when striking the object. Larger objects can be sawed through or sliced away at the rate of about 5 cubic feet per turn.
The dimensional blade is also effective against phased or ethereal creatures. If the wielder has some way to detect ethereal creatures, the blade can strike and affect them normally.
* - (a razor-thin shard of glass)
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