Shyvana is a really strong jungler with a good jungle clear.Start from the krugs.When you kill them takedown your red and the go for the rift scuttler.Then look if there is any gank potentional ,if you can't continue your jungle clear till the grob.Look again if you can gank,if you can't go b.

This is the moment of the game that you will deal the most dmg so take an advantage from ths.(Gank alot,invade-bully the enemy jungler and takedown objectives)

Becarful with your dicisions(when you go in, when you push, when you take other objectives such as baron and elder dragon).Focus ad or ap carry, try to 1 v 1 the weak enemys,you are really tank and the dmg you will deal is gonna be big.

PROSTanky-Can carry teamfight-Big dmg input
CONSEasy to kite-Can loose teamfight becasue of a bad dicision-Can be bad if stay behind