Tallhorn
Beast -- Huge -- Open highland meadow, ridge-transitional forest edge, wide river valleys
It came out of the tree line at a walk, and we stood still because there was nothing else to do. It was bigger than the accounts had prepared me for. Not dangerous-bigger. Just big in the way that changes what you understand the scale of things to be. It crossed the clearing without looking at us. When it reached the far tree line it paused and turned its head. Not at us. At something in the air. Then it went in and the forest closed behind it and we stood there for a while not saying anything.
-- field log, highland survey, northern approach corridor
Ecology
The Tallhorn is the dominant large browser in open highland terrain: a massive, long-legged cervid-lineage animal that can cover ground at sustained speed few ground predators can match and that, when cornered or protecting young, becomes something categorically different from what it looks like at rest. The antler rack on a mature bull is functional bone architecture -- not display, or not only display -- built for fighting at close range and reaching overhead into the canopy layer. The reach of 10 feet in confined spaces reflects this: a Tallhorn in a canyon cut or a forest corridor with low ceiling has weaponry that extends past the comfortable engagement distance of most things that would challenge it.
They move in small herds -- typically three to eight -- during the seasonal migration circuits that follow the best browse. Outside migration, mature bulls are solitary or in loose bachelor groupings; cows with calves stay in the core herd. The behavioral record shows no territorial aggression toward travelers under normal conditions. They are aware of human parties on the landscape and will monitor them at distance; the alarm signal is a specific resonant call that carries across ridgelines. A Tallhorn herd that is calling is in contact with something they have decided is a threat.
The Rampage trait -- the activation of a second Gore or Hooves attack when first reduced to half hit points -- reflects a documented behavioral threshold in large cervids under lethal threat. An unwounded Tallhorn is an obstacle that can be talked around; a Tallhorn that has taken significant damage is an uncontrolled force that will finish what it started. The distinction is important for encounter planning. Getting a Tallhorn to this threshold without immediately controlling it is a serious error.
The substrate interaction is ambient rather than dramatic: the Miasm density in highland meadow habitat runs unusually consistent, and long-resident populations develop subtle behavioral calibration to local density gradients -- moving away from areas of elevated disturbance, clustering in zones of stable saturation. Whether this is active sensing or conditioned habit is not resolved. It produces, in practice, a large animal that is reliably present in predictable zones and reliably absent from zones of active Miasm disruption, which makes them an inadvertent indicator of substrate conditions for the settlements that track them.
Stat block
| AC | HP | Speed | Initiative |
|---|---|---|---|
| 12 | 42 (5d12 + 10) | 60 ft. | +0 (10) |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 19 (+4) | 16 (+3) | 14 (+2) | 7 (-2) | 11 (+0) | 11 (+0) |
Senses Passive Perception 10
Languages None
CR 2 (XP 450; PB +2)
If the Tallhorn moves at least 20 feet straight toward a target and then hits it with a Gore attack on the same turn, the target takes an extra 7 (2d6) Piercing damage. If the target is a creature, it must succeed on a DC 14 Strength saving throw or have the Prone condition. When the Tallhorn is first reduced to half its hit point maximum, it immediately makes one Gore or Hooves attack as a reaction. The Tallhorn makes one Gore attack and one Hooves attack. Melee Attack Roll: +6, reach 10 ft. Hit: 11 (2d6 + 4) Piercing damage. Melee Attack Roll: +6, reach 5 ft. Hit: 13 (2d8 + 4) Bludgeoning damage.Charge
Rampage
Multiattack
Gore
Hooves
Encounter use
A Tallhorn herd in the party's path is primarily a navigation problem, not a combat one -- 60-foot movement, CR 2, Huge size, and a Charge that knocks Prone makes engaging a herd directly a poor decision for most groups. Use them to establish the scale of the landscape: something this large moving at that speed tells the players what kind of country they are in. The real encounter pressure comes when someone provokes one -- a poorly placed shot, a spell that catches a cow near calves, riding through the middle of a migration passage. Once the Rampage threshold is crossed, the animal is no longer manageable by talking and no longer retreating. The reaction attack at half hit points is designed to punish parties that do not commit to ending the fight before it reaches that state. Two attacks per round plus Charge is more than capable of downing an incautious mid-level character.
Salvage
A Tallhorn carcass is a substantial resource for any settlement with the labor to process it: food for weeks at highland-community scale, hide with enough surface area for multiple sets of armor or a season's worth of roofing. The antler material is exceptionally dense -- harder than most bone and suitable for structural tool use. The tendons, particularly the leg tendons, are prized for bowstrings and heavy binding applications. Settlements on the highland migration routes maintain harvesting agreements calibrated to the herd sizes they track; over-harvesting a corridor collapses the herd within a generation, so the communities that have been here long enough know the numbers.