ancient lightning dragon

Herald of the Valkrie-King Doomfullord:

For the rest of the battle a deadly storm forms over the battlefield getting progressively worse turn by turn. Ultimately ending in disaster for everyone.

Turns:

1-5: Nothing happens, a short rain begins and the ground of the battlefield begins to be soaked in water, thunder can be heard above in the skies.

6-8: Lightning begins to randomly hit the battlefield as the floors begin to flood slightly. (Every turn roll a 20 sided die, if it hits a 2, let chatzy choose who it hits.) The cries of drakes can be heard above.

9-19: Lightning now hits more often. (5/20 chance) And Thunder Drakes, smaller cousins of the Lightning dragons begin to show up. (Roll a separate die, 1/20 is a thunder drake showing up to aid the caster in battle.) The Roar of a Thunder Dragon can be heard.

20-39: Lightning now constantly striking. (10/20 chance, or 1/2) and Drakes no longer come, but there is now a chance for a thunder dragon to show up, angry at all forms of life, be it enemy or the caster. (3/100 chance)

40+: Lightning now strikes at least one person each turn. (Roll a 5 sided die. 1-3 means 1 person is struck. 4 means 2, and 5 means 3.) And an ancient lightning dragon, larger, tougher, and angrier than any other dragon shows up and begins battle. Both Drakes and Dragons (2-6/20 chance for a drake to show up, and 1/20 for a dragon, roll only 1 die.) to aid in battle with the ancient lightning dragon.