This is how to make a Pantheon with Extreme burst power right after he uses his ultimate and destroys the enemy to bits. If you liked this, Check out my Youtube Channel

PROS:
High Burst DPS
Good Stun
Great Pursuit Mechanics
Viable Sustain

CONS:
Low Movement Speed
Long CDs
Requires Leash

Try to stay in the jungle as long as you can. Try to stay at least until level 6 to get your ultimate(R). Start at the gromp and have top leash you. After gromp top will leave you and you will solo blue buff. After blue buff you can heal up and take out those wolves and then you will be level 3. Always smite the gromp so you get the poison buff. After that you recall and buy the items above. After that you will go get red buff (smite it to regain health so you don't need pots). Next krugs and skip the birds. the birds will most likely kill you or heavily damage you.

The marks of Critical Chance and Quints of Critical Damage work together to give you burst Damage right out of the gank. Seal of Armor and Glyph of Magic resist builds your tankiness since you wont use tanky items with this build. Mxing your marks and quints with Inifity Edge works really well.

Pantheon can pursue enemies but is lacking an escape mechanic so we take flash. The smite if used for all junglers because if you don't have smite it won't let you jungle :)

Wait until your primary tank initiate a fight. Unlock your map and find a perfect spot to use your Sky Fall (R) and ult in. Stun and focus the ADC and then work with your team and focus who they are. If you see anyone running away, use Chilling Smite and your Aegis(W) to catch them.