Destiny 2 Titan BuildErgo Strong

You can get infinite restoration using ergo sum. This is the only sword that takes special ammo which means we can run a normal heavy weapon for DPS and also use stronghold for survivability. Stronghold makes it so you can block indefinitely with swords and each time you block damage, you build up stacks of perfect guard. Then whenever you hit an enemy with your sword, it will consume your stacks and give you restoration x2 (the best form of healing in the game).

Because Ergo Sum is a special weapon, you will almost always have ammo for it so you can keep this restoration going basically all the time and you aren’t sacrificing much to use it since you can still run a good heavy weapon. But it gets better because you can use Ember of empyrean to extend the duration of restoration with solar kills. So if you manage to get a solar Ergo Sum, you can block with this weapon to get the best restoration in the game, then just get kills with it to keep it going forever. And if you ever let it run out, just block again to start it back up.