Guild Wars 2

[Extended Potion of Dredge Slaying]
http://www.gw2db.com/recipes/11116-extended-potion-of-dredge-slaying#related:ingredients

[Powerful Potion of Dredge Slaying]
“http://www.gw2db.com/recipes/9327-powerful-potion-of-dredge-slaying#related:total-items

Same Ingredients , same contents , but there are 3 differences,which is:

1. [Extended Potion of Dredge Slaying] is a rare item but [Powerful Potion of Dredge Slaying] is fine item

2.[Extended Potion of Dredge Slaying] only has 2 min but [Powerful Potion of Dredge Slaying] has 1 hr

3.[Extended Potion of Dredge Slaying] is cheaper than [Powerful Potion of Dredge Slaying]

lol