Best Sources of Exp/Drop Buffs

I'm gonna prioritize stuff you can get ingame, and stuff that lasts longer. Separate spoilers for stuff that stack; will mention stuff that doesn't stack inside the spoiler. So basically the question is, what else is out there?

 Big Spider Familiar: 60% drop

Drops from the relevant monster at a low rate.
Lasts about 2 hours after being summoned; permanent.

Alternatives:
Mutant Pig Familiar (60% drop) - drops from the relevant monster
Wolf Underling (100% drop) - can't be obtained ingame
Easter Egg Buff (100% drop) - can't be obtained ingame
Weapon & Armor Store Part-Time job (30% drop) - lasts 10 min per hour logged out.

 Greed Pendant: 20% drop

Drops from the boss in Monster Park Extreme at a low rate.
Permanent.

 Inner Ability: 3%/8%/13%/18% drop

Rare/Epic/Unique/Legendary ranks. Obtain by recirculating.
Permanent.

 Legendary Potential on Accessories: 10/15/20% drop

Level 0-30/31-70/71+ accessories can have potential.
Permanent.

Unlimited use:

 Mercedes Link Skill: 10%/15%/20% exp

Received for leveling Mercedes to 70/120/210.
Can be linked to one character at a time; permanent.

 Pendant of the Spirit: 10/20/30% exp

Various game events. Amount increases each hour you are logged in.
Usually lasts 1 week or 1 month.

 Pipsqueak Orchid: 3% exp

Can be obtained in Monster Life.
Lasts 30 days.

 Silent Crusade Ring: 2% exp

Reward from the end of the Silent Crusade quests. Can't be obtained at the moment?
Permanent.

Limited use:

 EXP Accumulation Potion: 10% exp

Bosses drop recipe; Evo drops ingredients.

 Extreme Gold Potion: 10% exp

Drops from the boss in Monster Park Extreme at a low rate.
Lasts 30 minutes.

 Part Time Job: 30% exp

Resting job - each hour offline adds 10 minutes to the duration.
10 min * up to 6

Alternatives:
Family buff: 20% exp - Costs 900 or 2000 rep for individual version. Once per day. 15 or 30 minutes.
Family Bonding: 50% exp and drop - Requires all your Juniors logged in, lasts 30 minutes. (drop doesn't stack with Familiar buffs afaik)

EXP Accumulation Potion - 10% EXP (hunt bosses for recipe, farm ingredients through Evo)
Extreme Gold Potion - 10% EXP (drops from rare rhino boss in Monster Park Extreme)

All stack.

There's also an exp buff you can obtain from part-time job, but I don't know specifics of it.

Unique IA when using the regular Circulators can land on 13%* drop rate.

Legendary Potentials on Accessories can have certain percentages (don't remember off the top of my head) for drop rate.

Monster Park Extreme Gold Potions give an additional 10% EXP for 30 minutes.

There's also an exp buff you can obtain from part-time job, but I don't know specifics of it.

You can get 1.3x EXP as a random additional reward after doing Resting or whatever it's called, if not Resting than something very similar.

Unique IA when using the regular Circulators can land on 15% drop rate.

Legendary Potentials on Accessories can have certain percentages (don't remember off the top of my head) for drop rate.

Got the IA the other day, isn't it 13%?

Pots are 10%/15%/20% and align with the normal potential tiers.

You can get 1.3x EXP as a random additional reward after doing Resting or whatever it's called, if not Resting than something very similar.

Yes it comes from resting. I've done a lot of testing with this, and you always get the 1,3x buff if the reward is special (note red text at login screen). The buff will last for 10 min for each hour that you put your char in part time job for. However if you do 1 hour and 1 min, it will be 20 min duration instead of 10 min. The last option of part time jobs will ALWAYS give you a 1,3x drop coupon (forgot the name, one to the >>>). Both of them act like family buff or the free 1.5x coupons, so you cant stack them.

Got the IA the other day, isn't it 13%?

Pots are 10%/15%/20% and align with the normal potential tiers.

Yes its 13%

Family buffs? They are tiny buffs but they are rather easy to obtain.

Also I'm pretty sure it's Big Spider, not Giant Spider.

Got the IA the other day, isn't it 13%?

Must have remembered incorrectly, edited.

You may want to consider mentioning the spirit pendant and the old silent crusade ring (2% EXP). Remember that in terms of grinding, the ultimate, ultimate goal of DPS is not only for the numbers, but for the speed of getting EXP per kill, so in this case %EXP increase is the ultimate, ultimate increase in DPS.

Just sayin' the obvious, HS plox.

Hadriel

Why do you have wolf underling as unavailable in game?

Anyways to add to the topic

Mingu Familiar - 50% drop rate
Bonus legendary potential - Item drop 5% (most if not all equips)
Bonus legendary potential -5% exp on ha
Also Wealth Acquisition Potion - 10% additional drop rate from Alchemy Profession

Why do you have wolf underling as unavailable in game?

The Wolf Underling doesn't drop them so you'll have to buy one from a player.

Plus IIRC you have to be a level 150+ Aran with 2 out of 3 mount quests done to even hunt them. So most classes are out of luck.

I don't remember the specifics or the scaling, but there is the EXP Guild Skill.

The Wolf Underling doesn't drop them so you'll have to buy one from a player.

Plus IIRC you have to be a level 150+ Aran with 2 out of 3 mount quests done to even hunt them. So most classes are out of luck.

Just out of curiosity, from where did you get confirmation that the familiar does not drop in game? I haven't heard of anyone claiming to actually get a drop off of the mobs in the mount quest, but that's not proof for or against...