Encounter Arkrhyst

Building the Encounter with Arkrhyst in D&D 5e, I first changed the fall in the cave to only 160 feet, I use D10's for falling damage instead of D6's to a maximum of 40D10's.

Why? well if a character has over seventy hit points they should survive the fall according to the rules as written, with this rule change characters need to be still afraid with two hundred hit points, I play a lot of high level games and found people jumping of high places a little too much.

So 8x11 is only an average of 88 H.P's of damage from a 160 foot fall, even level eleven characters will be scared of that.

Arkrhyst will be a Adult Blue Dragon stats and change all the immunities to cold and, all lightning damage is changed to cold damage and the breath weapon is just swapped for an adult white dragon.

I will ignore the part about the dragon casting spells after my last encounter against Mokmurian broke the players against spell casters.