Da Grate Derpy Erf
Umm, yes please.
##Undead War Elephant
Huge undead, neutral evil
Armor Class 16 (half-plate)
Hit Points 105 (10d12 + 40)
Speed 40 ft.
STR +5| DEX +1| CON +4 | INT
4 | WIS -1| CHA -3
Damage Resistances necrotic
Damage Immunities poison
Condition Immunities exhaustion, poisoned
Senses darkvision 60 ft., passive Perception 9
Challenge 6 (2,300 XP)
Arcane Command.* The elephant does not understand or respond to conventional methods of command, and thus can only be directed magically. The elephant can be commanded by a passenger touching the elephant who can cast at least one spell. Such a creature can use an action to make a DC 14 Ability Check using their Spellcasting Ability modifier. On a success, the passenger can command the elephant for 1 hour, or until they are no longer touching it. Wisdom (Animal Handling) checks may still be necessary in certain circumstances, as if riding a normal elephant.
Another qualified passenger touching the elephant can wrest control of it away from its current commander by using an action to initiate an ability contest with them, both contestants using their own Spellcasting Ability modifiers. The challenger successfully takes control of the elephant if it wins the contest.
Chest Cavity.* The elephant’s rib cage is hollow, and large enough to contain 1 Large passenger, or up to 4 Medium or smaller passengers. Any passengers in the elephant’s rib cage have three-quarters cover against attacks and effects originating from outside the elephant.
Trampling Charge.* If the elephant moves at least 20 feet straight toward a creature and then hits it with a gore attack on the same turn, that target must succeed on a DC 15 Strength saving throw or be knocked prone. If the target is prone, the elephant can make one stomp attack against it as a bonus action.
Gore.* *Melee Weapon Attack: Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 18 (3d8 + 5) piercing damage.
Stomp.* *Melee Weapon Attack: Melee Weapon Attack: +8 to hit, reach 5 ft., one prone creature. Hit: 21 (3d10 + 5) bludgeoning damage.
Edit: Added Arcane Command trait. Added prone specification to Stomp action.