Jax is a champion that is very easy to get the hang of, if use his abiliy properly he can deal large amount of damage in early game. The ultimate way to harass enemies in early game is to use a combination of empower then leap Strike then afterward running away until your next cooldown(CD). Jax ultimate is relentless assault, i think the main thing his ult is his passive(every attack sucessfully hit will increase his attack speed and every 3 hit deals additional ''magic damage''). i like to get items similar to champion skill or passive as this will help that move to be more stronger or effective like guinsoon's Rageblade(every hit increase attack speed and Ability power) to match up with his ultimate. My last items are Rylai's Crystal Scepter to help slow enemy down making an easier kill for me. the reason why I don't get Frozen Mallet is because Rylai's has more ability Power over attack damage and because every 3 of my attack deals magic damage and including all my skill, that should be enough to slow them. please comment, Vote and Thankyou.