Lane poke, all-in, and snowballing.
Durability and crowd control
After immobilizing an enemy champion gain defenses and later deal a burst of adaptive damage around you.
Charge up a powerful attack against a tower while near it.
Restore health over time based on your missing health.
Gain permanent health when enemy minions or monsters die near you.
Empowered abilities and resource manipulation
While above 70% health, gain up to +40 Ability Power or +28 Attack Damage (based on level), Adaptive.
Gain increasing amounts of AD or AP, Adaptive over the course of the game.
+6 AD or 10 AP
+5 Armor or 6 MR (match-up)
Aftershock is massive for empowering your ability to all-in and assassinate your target without also giving up your life.
Demolish on Pantheon allows you to turn early lane kills into meaningful tower damage and early gold advantage,
Second Wind further empowers your ability to trade efficiently in lane so that you're able to all-in when you find the opening.
Overgrowth's health scaling helps to patch up one of Panth's weakest areas, his late game.
Absolute Focus' extra AD is huge for empowering your early game [Q] poke so that you're able to get first blood.
Gathering Storm further looks to patch up Pantheon's weakest aspect, late game scaling.