Always start on botside map, ask other side to watch your second buff(u need both!!). Save your smite and go second buff. Kill frog/golems and go for gank. Its easy and effective. Pantheon have much dmg in early game (u need use it well). Panth is strong in early game, loose it in mid game (u need decide well what u ll buy after black cleaver).

Pantheon is easy to play vs squishy champions with no cc. U can easy hunt for adc like ashe, jhin, caitlyn, miss fortune. Playing 1v1 u can beat rengar, jax, khazix, and most of junglers before 6 lvl. At 5 lvl u are very powerful 1v1. After lvl 6 u can gank on bot and get double kill. Try to give some kills to your team, becouse in mid game moment your killing potential will slow, and enemy team will focus on U. The most powerful weapon for pantheon in heavy cc champs like leona, braum, brand, annie, ammumu, nunu, malphite. In TF try to land your E on 2 or more enemy champs. GL and have fun playing Pantheon.