Legendary Resistance (1/day). When ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ fails a saving throw it can choose to succeed instead

It Follows.  ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ's speed automatically raises its speed to be 10ft faster than the highest speed amongst the creatures it can see (minimum 40ft)

It stalks. ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ can cast invisibility on itself (no concentration required) at will so long as it is not in direct line of sight of any creature

Multiattack. ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ can make a gore attack and a trample attack 

Corridor of Death (recharge 6). ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ can target a creature it can see within the range of its move speed, it may magically increase the distance between itself and the target by up to 30 ft before it moves up to its move speed in a straight line until its within 5ft the target, that target must make a DC 17 strength saving throw, on a failed saving throw the creature takes 5 (1d8) bludgeoning damage for every 10ft it moved before reaching the target

gore. Melee Weapon Attack: +10 to hit, reach 5 ft., 1 target. Hit: 15 (2d8 + 6) bludgeoning damage. The creature must make a DC 17 strength saving throw or be pushed 10ft and knocked prone

Trample. Melee Weapon Attack: +10 to hit, reach 10 ft., 1 target. Hit: 16 (3d6 + 6) bludgeoning damage. If the creature is prone it takes an additional 9 (2d8) bludgeoning damage

It cometh. ᛒᛚᛟᚦᚷᚨᚾᛞᛁᛊᚨᛚᛊᚲᛟᚷᚨᚱᛁᚾᛊ may swap positions with its keeper (Ylva) so long as they are within 60ft of eachother