From the D&D5 Playerbook:
Sneak Attack
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Beginning at 1st level, you know how to strike subtly and exploit a foe’s distraction. Once per turn, you can deal an extra 1d6 damage to one creature you hit with an attack if you have advantage on the attack roll. The attack must use a finesse or a ranged weapon.
You don’t need advantage on the attack roll if another enemy of the target is within 5 feet of it, that enemyisn’t incapacitated, and you don’t have disadvantage on the attack roll.
The amount of the extra damage increases as you gain levels in this class, as shown in the Sneak Attack column of the Rogue table [thats 1d6 for every odd level you posess].
yeah it's once per turn in 5e. In Bg3, it's once per round. If you use sneak attack as reaction in Bg3, you cant sneak attack when your turn starts. This is not how it works in 5e. In a game where there is so much homebrew power creep, nerfing sneak attack from base ruleset doesn't make any sense.
I'm talking strictly about honor homebrews, when things like the tavern brawler, triple casting leveled spells in a turn(haste + metamagic), double damaging persistent area of effect spells ie spirit guardian, cloud of daggers, moonbeam etc. (once at casters turn, once when opponent's turn starts), arcane acuity stacking, no attunement limit etc. exists, it destroys the baseline power level of that 6d6 sneak attack of 5e. Thats why I asked for the buff, so playing pure rogue doesn't feel like playing a weaker version of another class.
