I'm a medium sized character who has a long spear that does 1d8 damage, and has 10ft reach. What happens if Enlarge Person is cast on me?
I get that I get reach, so I can make melee attacks at 10ft...But does that mean I have no options for attacking 5ft from me?
I get that my weapons go up a damage increment, so 1d8 turns to 1d10.
But is the 10 ft reach of a spear also effected? And what does that mean? Can I still attack people 10ft away from me, or would they be too close?
A reach weapon doubles your reach and prevents you from attacking closer than that.
A medium character with a reach weapon hits 10' away but can't attack 5' away.
A large creature with a reach weapon hits 15-20' away but can't attack 5-10' away.
Had to look this up myself since the reach weapon description is poorly worded. When you're large your "natural" reach will be 10ft (with non reach weapons), with reach weapons your reach will be 20ft but you still can't hit things adjacent to you.