Guild Wars 2

I have seen a couple rangers recently who leave a trail behind them. Looks like puddle or a circle of flowers or something, I don’t know. It looks cool, but I have no idea what it is or the purpose.

It sounds like you are seeing the effects of legendary weapons. The legendary longbow called the Kudzu leaves behind flower prints or flower footsteps. All main hand/Dual Wield legendaries have special effects with them.

Kudzu Below
http://wiki.guildwars2.com/wiki/Kudzu

Legendaries
http://wiki.guildwars2.com/wiki/Legendary