The example turn you described is legal concerning RAW. You would be able to break up your movement and attack both targets as long as your mount has enough movement to get you there. As for the opportunity attack, any time you move outside of a creature's reach without taking the Disengage action you would provoke an attack of opportunity. Luckily, in your example you are using a lance which has the Reach tag. This means that unless the creature you are attacking also has a reach weapon or has some other way to extend its melee reach to at least 10 feet you could choose not to provoke an opportunity attack simply by attacking within your reach and staying outside of theirs.
If for some reason avoiding the opponent's reach cannot be done, let's consider the following:
Page 198 of the PHB:
if the mount provokes an opportunity
attack while you’re on it, the attacker can target you
or the mount.
That being said, the mount can use it's action to take the Disengage action to avoid being attacked,
The initiative of a controlled mount changes to match
yours when you mount it. It moves as you direct it, and
it has only three action options: Dash, Disengage, and
Dodge.
and you would not provoke an opportunity attack because,
Page 195 of the PHB:
You also don’t provoke an
opportunity attack when you teleport or when someone
or something moves you without using your movement,
action, or reaction.
As for the mount's ability to attack...
Although the steed has an unusually high Intelligence of 6, that doesn't make the mount an intelligent creature who can act independently of you, and it can't attack while ridden. Here's a couple links to a few Tweets from Jeremy Crawford, one of the lead game designers:
Not Independent.
The mount summoned by the find steed spell serves the summoner. It isn't an independent creature.
Still has normal mounted combat options
While ridden, the steed follows the normal mounted combat rules (PH, 198). Unridden, it has normal action options.
The normal mounted combat rules state that a mount not acting independently can only use the Dash, Disengage, and Dodge actions as shown in the quote above in bold.
For trampling charge to work, the mount would need to use the Attack action to attack with its hooves, which isn't in the set of the controlled mount's possible actions.
Trampling Charge. If the horse moves at least 20 feet straight
toward a creature right before hitting it with a hooves attack, ...
Therefore, the mount cannot use trampling charge.
This looks almost correct. However, I'm almost certain a scroll of permanency must include as part of its creation (therefore adding to its price) expending material components equal to at least the amount it'd cost to have the the spell permanency affect whatever spell will be affected. In addition, the GM may require each scroll of permanency to specify the spell that permanency spell will make permanent.
Option 1: Use scrolls
Option 2: Use services
- 1 casting of the 2nd-level spell invisibility by a level 3 caster (60 gp).
- 1 casting of the 5th-level spell permanency on the spell invisibility by a level 10 caster plus material components (5,450 gp).
Option 3: Do it yourself
- 1 casting of the 2nd-level spell invisibility at any caster level up to your own.
- 1 casting of the 5th-level spell permanency on the spell invisibility at any caster level that's at least 10
- Material components costing 5,000 gp for the spell permanency on the spell invisibility.
Option 1 costs a total of 6,400 gp. Option 2 ideally costs 5,510 gp. (I say ideally because were I a wizard who loves money I wouldn't cast permanency on some low-level punk wizard's invisibility spell; I'd make you pay for one of my far better solid, robust, dependable, level 10 invisibility spells. You don't want to skimp, do you? This will be permanent, after all.) (Tip: In the world of Pathfinder durations, permanent only means permanent until dispelled.) Option 3 costs only 5,000 gp, but you've to be an appropriate level 10 caster (necessary, in all cases, because of the minimum level needed to affect an invisibility spell with a permanency spell).
Best Answer
There are many items left undefined; they are left up to the GM
There are several items in the Player's Handbook which are left undefined, such as the Mess Kit, Grappling Hook, Hammer, and Chain; and others from various modules such as garlic, and salt from Curse of Strahd. Some items we learn their weights or prices, but many we don't. Amongst only the various Pack's and Kits in the Player's Handbook the following are mentioned, but never defined in any way: String, Bell, Censer, Alms Box, Bag of Sand.
Blocks of incense are a similar item, they are not specifically defined in the rules. Thus, how they work would be left up to a GM.
Unfortunately, we also cannot determine the price of the incense by summing up the price of all the items in the Priest's Pack and comparing it to the Pack's own price (19gp). Though this does work for other Packs (The Diplomat's Pack costs 39gp and the sum of everything in it is 39.24gp).
What we can say is that an Alms Box, 2 Blocks of Incense, 1 Censer, and Vestments collectively cost around 14.7gp. None of these items have a price though so we are quite stuck. Fine Clothes (probably close to Vestments) already cost 15gp so we can't quite use those either unless we assumed everything else was free.
Incense is used in some other places:
The Acolyte background gets 5 sticks of incense.
There are also spells which use incense as a material component including (but not limited to): commune, conjure elemental, control water, divination, find familiar, and forbiddance.
The Dungeon Master's Guide also mentions incense when discussing religious observances, when listing items a shop may have, and lists an Incense Burner as a religious article.
Tomb of Annihilation also has an item called "Insect Repellent" which comes in two forms, a greasy salve and a block of incense. This insect repellent incense block costs 1sp, has no listed weight, and has a specific effect of repelling insects near it while lit. This is certainly not the same incense found within the Priest's Pack, but it is an example of a specific type of incense somewhere else in the rules.
Unfortunately, in none of these places is incense further defined, nor given a price/volume or price/weight.