The starter kit, and the only one that never does the work for you: a stone sword, an inventory full of soups, no ability.
Everything you do with PvP comes from your aim, your soup timing and how you read knockback. It is the reference kit — the one every other kit is measured against.
If you are new to LJKITS, stay on it until the 1.8 soup reflexes are yours. The rest follows on its own.