Guild Wars 2

http://wiki.guildwars2.com/wiki/Necromancer_Combo_Skills

http://wiki.guildwars2.com/wiki/Combo_field

The first link will tell you what skills the necro has that can be combo fields and combo finishers, the second link will tell you what combo finishers do to different types of combo fields.

For a necro, while on land, you only have combo fields, that are your wells, available all the time, as light or dark fields. Staves, however, have a blast finisher and and a poison finisher on the marks.

On water, however, you have whirl/projectile finishers with the spear and projectile/blast on the trident. No combo fields, however.

Dirame’s first wiki link is pretty spot on.

If you want an all in one tool for combos, finishers, effects, and what profs can do what, this one is pretty good.

http://www.mastodonte.fr/outils/tool-combo#en

Mutlei.7698:

For a necro, while on land, you only have combo fields, that are your wells, available all the time, as light or dark fields. Staves, however, have a blast finisher and and a poison finisher on the marks.

On water, however, you have whirl/projectile finishers with the spear and projectile/blast on the trident. No combo fields, however.

Our charge (trident) is not only a leap but also a poison combo field~