A ranged, mage, lanne pusher who is based to keep lanes under control, poke hard and make a great asset in a team fight due to the large ammount of AoE effect moves.

My rune selection is based on dealing lots of damage with some hard long range pokeing and large AoE damage to the enemey whilst haveing mana regen to keep a lane under control with out haveing to B, makeing him a consistant pain.

as a pusher ziggs can poke every easily with his bounceing bomb and deal high damage at the same time makeing him a large threat in fight also it allows him to farm minions easily instead of haveing to go for champion kills you can farm all day long but if you do go for champion kills go with someone or just hug a turret.
satchel charge is to be used as a quick knock into the air away from an enemay such as over walls or just to get some distance between yourself and a other chapion.it can also be used as a thow up in the air on an enemay near a turret or in a team fight or even a cc on a champion poping their ulti such as katarina.
hexplosive is to be used as a slow in a fight or as a get away to slow enemays in their tracks while you get away free or they get taken out with a slow run away.
Mega infurno bomb is to be used in a long range kill pick up or in a large team fight where the enemay team is nice and close togeather so you can hit every single one.
(if you lucky and they all have low health and are close togeather you may even pick up a penta due to its huge damage delt.