Pantheon with Warlords Bloodlust on toplane.
Warlords Bloodlust works on Monsters and Minions. So with Heartseeker strike which guarantees crits on anything below 15% he will gain HP from.
So when he last hits he gets 15% hp from that crit.
Is this possibly to strong of interaction?
Also not only that, if Pantheon builds essence reaver he will always get mana when he last hit minions below 15% because crits proc the mana regen.