Start

Item
If u rather prefer Doran's ring instead of boots, go ahead and pick Doran's ring afterwards just follow the guide.

Runes
Burst guide either pick this combination
Mark: Greater Mark of Alacrity
Seal: Greater Seal of Replenishment
Glyph: Greater Glyph of Potency
This will give u nice high burst damage and quite good mana regen.

or this

Mark: Greater Mark of Insight
Seal: Greater Seal of Resilience
Glyph: Greater Glyph of Potency
This will give u better sustainability which is good if your going to gank a lot. And also with atk.speed runes helps you farm as well and deal more damage when u have seastone trindent active.

Skill combinations

First u simply dash towards your target with urchin strike with seastone trident active chase all the to the torrent and just as the torrent is about to hit you, you jump away with playful trickster.

or

Use jump towards your target wit playful trickster and dash so your on the opposite side of your target with seastone trident active. But if u get ganked while doing this you have no escape route more then to flash away.