Jeremy Crawford deemed it to not work
So, a few minutes after I posted this question, I found some information from Jeremy Crawford which explained how it didn't work. One of his answers here says that it says "a Medium creature", which does not include creatures on top of other creatures:
Twitter user: Just so you know, the #DND hive mind has ...
No. The Amazing Light Speed Horse™ cannot move an infinite distance
(And what distance it does move without taking the dash action is at a speed of at most movement per round, and with the dash action is 2×movement per round.)
Per the definition of movement from the Basic Rules v 0.3, page 63, and also from the Player's Handbook, page 181:
Every character ...
A horse is a creature just as a player character is (see this Q&A). Thus, a horse can benefit from goodberry with no issues.
If the spell was intended to be restricted to certain creature types (humanoids, for example) the spell would say so.
It is worth noting that goodberry is apparently not intended to provide water according to Jeremy Crawford:
There are no rules, but Int 3 seems like a dividing line in 5e
The following spells seem to treat Int 3 or less as unintelligent:
Animal Messenger: "If the beast's Intelligence is 4 or higher, the spell fails. "
Awaken: "must have either no Intelligence score or an Intelligence of 3 or less"
Detect Thoughts: "If the creature you choose has an Intelligence ...
Yes, if your DM thinks a panther has the right anatomy.
The gnome is Small (PHB 37) and the panther Medium (PHB 308). The relevant rule says:
A willing creature that is at least one size larger than you and that has an appropriate anatomy can serve as a mount (PHB 198)
Your ranger's animal companion is certainly willing. It does depend on whether your DM ...
In D&D 5e, the daily rate of mounted overland travel is generally the same as on foot, because horses get tired and adventurers carry a lot of heavy equipment.
See the section Special Travel Pace in the DMG (p. 242–243). This section starts:
The rules on travel pace in the Player’s Handbook assume that a group of travelers adopts a pace that, over ...
The game benefits to having a mount in-game are the same as the real-life benefits of having a mount.
You can carry much more at a normal pace with a mount. A riding horse's carrying capacity is 480lb; a 15-strength PC's unencumbered1 carrying capacity is 75lb.
You can move faster in short bursts with a mount. A mount can gallop, moving at double-pace, for ...
This does not work.
The spell Find Steed allows you to cast a spell and have it also affect your steed.
While mounted on your steed, you can make any spell you cast that
targets only you also target your steed.
In the targets section of the PHB, it states:
A spell's description tells you whether the spell targets creatures,
objects, or a point ...
As far as I can tell, rules are scarce on this subject. All we have is:
PHB, Chapter 5, page 144: (on wearing armor, in general)
Armor Proficiency. Anyone can put on a suit of armor or strap a shield
to an arm. Only those proficient in the armor’s use know how to wear
it effectively, however. Your class gives you proficiency with certain
types of ...
Mechanics of the game don't include anything like this so it's homebrew/ DM discretion all the way.
Destriers are trained from birth to be ready for battle so the process would be lengthy in the real world.
Historically, warhorses weren't the massive beasts media portrays them as. They needed strength and agility to perform battlefield manoeuvres and to be a ...
Stabling Costs (Rules)
The Tack, Harness, and Drawn Vehicles Table gives the cost of stabling a mount as 5sp per day.
Lifestyle Expenses (Interpretation)
Take a look at the descriptions of the Lifestyles in the Lifestyle Expenses section of the PHB. In particular, look at the jump between Modest and Comfortable (emphases mine).
Modest. A modest lifestyle ...
Yes, as long as the mount is within 5 feet
An ally is not clearly defined in 5e, so we can use the English definition:
a person, group, or nation that is associated with another or others for some common cause or purpose
Ally in the case of D&D 5e is almost certainly meant to include animals since wolves get the Pack Tactics trait too so we just have ...
The most relevant parts of the find steed spell are (my emphasis):
... unusually intelligent, strong, and loyal steed, creating a long-lasting bond with it.
Your steed serves you as a mount, both in combat and out, and you have an instinctive bond with it that allows you to fight as a seamless unit.
While your steed is within 1 mile of you, you can ...
Firstly that's not what it means. All mounts can be allowed to act independently. The dumbest horse in the universe doesn't need someone to tell it what to do, and can act independently, without needing orders to walk around, eat, etc. All mounts can act independently.
However, “[i]ntelligent creatures […] act independently” — always. You can't control a ...
No, a controlled mount acts on its own turn (adjacent to the rider's)
Initiative determines the order of turns during combat. [...] The DM ranks the combatants in order from the one with the highest Dexterity check total to the one with the lowest. This is the order (called the initiative order) in which they act during each round.
The PHB describes the ...
Yes, a player should know their mount's exact HP.
It's so clear-cut that even if the rules clearly said otherwise, you would want to override them to work differently.
I have never yet seen a DM with enough bandwidth to manage all the things which they already need to keep track of (myself included) and every addition to that reduces the quality of DMing ...
Find Greater Steed generally provides more powerful creatures
Below is a table showcasing the creatures that can be summoned by each spell.
Game-wise, that's up to the DM, but from a realism standpoint (not always a good one to use for a fantasy game), it's not going to work.
We know from various sources (such as Crusades-era horse transport ships, tapestries, and surviving pieces of tack and shoes) that warhorses in the 11th-12th century were around 15 to 16 hands, which is a moderately large ...
Sure, a giant spider can be a mount.
Here is what the Player's Handbook says about the eligibility of a mount in the Mounted Combat section (p. 198):
A willing creature that is at least one size larger than you and that has an appropriate anatomy can serve as a mount.
The giant spider is Large size, and humanoids are Medium size, so the size restriction ...
As far as I am aware, there is no way to give a creature the incapacitated condition directly. However, there are 4 conditions that give a creature the incapacitated condition as part of their effects. These are:
There are a number of ways to apply these conditions without damaging your beloved pet. Within the ...
Note up-front that allowing PC to ride another PC is already up to DM discretion as to whether the PC (the dragonborn in the case) has the "appropriate anatomy" to be a mount. Playing around with this can allow fun things like your gnome/dragonborn duo but also things like centaur stacks. The rules also clearly are not written to handle mounted ...
Find steed is intended to give different options than find greater steed
First, some unofficial guidance per Jeremy Crawford, lead rules designer:
Q: The Find Greater Steed kind of bugs me because 5E has so far
explicitly avoided 'greater' spells and allowed people to beef up
spells by spending larger spell slots. So why is Find Greater Steed
it's own spell?...
With the extremely obscure feat: "Mighty Steed". Found in the mount handbook, the handbook states:
Mighty Steed: A feat found in the Dragonlance supplements Bestiary of Krynn and Knightly Orders of Ansalon. A mount with this feat counts as one size category larger for determining carrying capacity and the minimum size of its rider. That is, it lets a ...
The DMG addresses this on p. 119, under the section titled "The Sky":
Flying by spell or magic item works the same as travel on foot, as described in the Player’s Handbook. A creature that serves as a flying mount must rest 1 hour for every 3 hours it flies, and it can’t fly for more than 9 hours per day. Thus, characters mounted on griffons (which have a ...
I am unable to find a specific answer to your question by RAW (maybe somebody else can help), but having a look at a relevant rule may help:
If the mount provokes an opportunity attack while you're on it, the attacker can target you or the mount.
The way I read that is that if your mount's movement of space (its occupied area) provokes an ...
Describe it differently
The crux of this seems to be "Wonder Woman's Invisible Jet is silly," which is an issue with the fiction the rules inspire. I agree, it's a pretty silly thing to have to imagine. In this case, though, let's ask ourselves the question: do I have to imagine it that way?
We're talking about a beast that blends with darkness and ...
Yes, you can mount your Druid friend
The rules for Mounts indicate that a willing creature at least one size category larger than you, with appropriate anatomy, can serve as a mount. A horse is obviously an acceptable mount, so a Druid Wildshaped into a horse is acceptable, so long as he is willing.
Do note that, because the Druid is intelligent, it must act ...
In a recent Dragon Talk titled Sage Advice on Mounted Combat Jeremy Crawford explained the intended rules, which are that the Paladin can choose:
The spell says that you and the steed fight as a cohesive unit and you can communicate with it and it serves you.
Really what that means is, it is up to you [...] whether to control it or let it act independently
Player's Handbook, p. 198:
A willing creature that is at least one size larger than you and has an appropriate anatomy can serve as a mount using the following rules.
However, there are limitations:
1. The DM has to say yes
It's undefined what is an "appropriate" anatomy, leaving that judgement up to the DM. It doesn't say they have to be a ...