dave2008
Legend
This is the list in question
Most of this list is either situational or requires burning daily resources. I look at this list and don't see how anyone is getting advantage most of the time unless they are something like a darkness monk, barbarian, or spamming stealth(and spamming stealth is such a murky rules issue that I wouldn't take it for granted it was available). Not in terms of getting advantage most of the time over the course of a 6-8 encounter day.
Well, here is a quick list I put together that can give you advantage on attack rolls (not mention checks, saves, and causing disadvantage):
Action
Help
Class
Assassinate
Bardic Inspiration (not technically advantage, but similar)
Cloak of Shadows = invisible in shadows = advantage
Chains of Carceri = hold monster = restrained = advantage/.;;;;;;;;;;;???????
Disarming strike = advantage
Feinting attack = advantage
Precision attack = add superiority die to attack (not advantage, but similar)
Ranger’s Companion = help = advantage
Reckless attack = advantage
Stunning Strike = stunned = advantage
Trip attack = prone = advantage
Vow of Enmity = advantage
Feats
Grappler = advantage
Lucky = advantage (essentially)
Mounted Combatant = advantage (unmounted creature)
Spells
Blinding smite = blinded = advantage
Blindness = blinded = advantage
Command – grovel = prone = advantage
Divine word= blinded or stunned = advantage
Ensnaring strike = restrained = advantage
Entangle = restrained = advantage
Eyebite = unconscious = advantage
Faerie Fire = advantage
Flesh to Stone = restrained = advantage
Foresight = advantage
Grease = prone = advantage
Greater invisibility = advantage
Hold Monster = paralyzed = advantage
Hold Person = paralyzed = advantage
Imprisonment = restrained = advantage
Invisibility = advantage
Otto’s Irresistible Dance = advantage
Power Word Stun = stunned = advantage
Prismatic Spray = restrained = advantage
Prismatic Wall = restrained = advantage
Shocking Grasp = advantage (if wearing metal armor)
Sleep = unconscious = advantage
Sunbeam = blinded = advantage
Symbol = stunned = advantage
Tasha’s Hideous Laughter = prone = advantage
Web = restrained = advantage
with all of those options, my players have found it fairly easy to keep up when they want to.