Here's how it works with savage attacker - you get to roll your melee damage dice twice every time you swing and keep the better result which is pretty sweet for consistency. The really interesting part kicks in with critical hits, since youre rolling all those doubled dice twice and picking the higher numbers each time.

Something worth knowing is that this applies to everything tied to your melee hits including divine smite and sneak attack damage, not just the weapon dice. If you're using bigger weapons like greataxes you'll see more benefit since that d12 gets a bigger boost percentage-wise than smaller dice would. Pretty nice that it works on every attack too unlike the tabletop version where you only get it once per turn.

The numbers can get pretty wild especially if youre playing a paladin and landing critical smites. Think about it - when youre rolling 8d8 damage on a crit and getting to pick the better result for each die youre looking at way more reliable high damage compared to normal rolls. Just remember it doesn't work with bows or throwing weapons but for any character focused on getting up close and personal with big weapons, this feat really helps make those important hits count.