Uncommon Spellcrafting - Weapon, +1 (Variant)

Unlike typical magical craftsmen, you create magical weapons that by all rights look mundane, perhaps even shoddy, but they strike just as true as the finest built weapons on the market.

At the end of the casting time, the 10 gp Incense, rare forest mushrooms, splinters of a lodestone are consumed and the 2nd level spell slot of magic weapon is expended, then you may make a DC 11 arcana check. If you succeed this check you make 1 day of progress in crafting your +1 Weapon. On a failed check you make no progress. Your +1 Weapon is completed when you reach 13 days of progress. 

At Higher Levels. You make an additional day of progress for each spell slot level used higher than 3rd.

*You must have the Magic Weapon and True Strike known, prepared, or otherwise available and expend a 2nd level spell slot in addition to casting the Uncommon Spellcrafting spell. This remains true even if you cast Uncommon Spellcrafting as a ritual spell. 

**Ritual Cast Time: When this spell is cast as a Ritual Spell, the casting time is 8 hours. 

(This is an original spell/magic item crafting system)