I couldn't miss the chance to practice my drawing!
Increase defense and parry rate. Parry while the ability is active to increase critical rate as well. A favorite among imperial knights.
Rampart also creates an amount of enmity that is comparable to Provoke, the Warrior Job ability. While this is true, Paladins would rarely if ever exclusively use an ability like Rampart to generate hate, even though they are a tank. They would still rely upon their Support Job, Warrior, for enmity-generating abilities.
Rampart is a Role Action common to all tanks learned at level 8. It reduces damage taken by 20% for 20 seconds, and has an instant cast time and a 90-second recast time. Before the release of Stormblood, it was a Gladiator ability learned at level 2, with the same function.
Rampart is a job level 7 ability for the Templar. It costs 2 BP to use, and forms a shield around all allies that prevents one physical attack.
Rampart is the job level 1 Command ability for the Templar. It forms a shield around the user and their allies preventing one physical attack and cost 2 BP.
Rampart is a defensive wall or bank around a castle, fort or settlement.