How to summon an NPC

So I've played around in-game and have discovered that encumbrance impacts roll speed, roll distance, and movement speed. These findings are supported by this video, which also reveals that stamina recovery is affected by encumbrance as well. I've posted the findings from the video and my in-game testing below.

• Roll Speed
  • Uses encumbrance breakpoints
  • < 70% fast roll speed

  • 70% slow roll speed

  • 120% can't roll

• Roll Distance
  • Doesn’t use encumbrance breakpoints, has an indirect relationship (distance decreases as encumbrance increases)
  • Roll distance decreases as your encumbrance increases
• Stamina Recovery Rate:
  • Doesn’t use encumbrance breakpoints, has an indirect relationship (recovery rate decreases as encumbrance increases)
  • Stamina recovery rate is cut in half at 105.8% encumbrance (compared to 0%)
  • With 132 stamina recovery rate was:
  • 2.3s at 0%
  • 3.1s at 56.2%
  • 4.0s at 85%
  • 4.6s at 105.8%
• Movement Speed:
  • Uses breakpoints

  • 100% walking and sprinting is slower

  • 120% walking speed further decreases and can no longer sprint

I'm a blue knight and yes I have to wear my ring for you to summon me and you must be in human form with your ring on to summon me. I've been summon from random places all across the map, even to areas I hadn't yet been too. The only place I wasn't summon to was the bell tower as that was a pvp area for the protectors of the bell covenant. If you were in that area, if you weren't human, if you weren't wearing the ring and one of us wasn't wearing our ring, that is why you couldn't summon one of us.

As for summoning and invasion The way it worked in dark souls 1 and dark souls 2 are different to make it more fair. It depends both on soul level and soul memory. Your soul level is what level you are while your soul memory is based off of how souls you spent on your armor weapon and levels. You can find it in your player status menu. It's to help fight against over powered people fighting under powered people.

Hope this helps and praise the sun.