Two questions about a villain..

[victortiti89]

Here is how I thought to describe it(before the final battle):
He turns himself into a four-headed dragon. It is red and black. Its teeth are like sharp swords. One head breaths fire. Another one breaths ice. The third breaths poison. The last one fires red lightning.
1)What is the right way to write this description in a screenplay? This is just the image it should convey to a reader..
2)Is it dangerous enough for a " final boss"?
Thank you for reading and answering!

 

[ChimpPhobiaFilms]

1) I'm not sure, how does he change into a four headed dragon?
2)Yes.

 

[ChimpPhobiaFilms]

2) Unless he is the size of a small lizard

 

[FantasySciFi]

Here is how I thought to describe it(before the final battle):
He turns himself into a four-headed dragon. It is red and black. Its teeth are like sharp swords. One head breaths fire. Another one breaths ice. The third breaths poison. The last one fires red lightning.
1)What is the right way to write this description in a screenplay? This is just the image it should convey to a reader..
2)Is it dangerous enough for a " final boss"?
Thank you for reading and answering!

Think visually when you write. What does the audience SEE?

EXT. FINAL BATTLEGROUND - DAY

In front of the Hero stands the Villain.  He steps back, holds up 
his arms and staff then brings it down sharply on the ground.

A wave of energy ripples out gusting against the Hero who must
shield his eyes.

The Villain's body contorts and expands, transforming into a
red and black four headed dragon with sharp, swordlike teeth.

The Hero adjusts his sword as Head #1 sends out a blaze of
fire.

The Hero raises his shield deflecting it just as Head #2 whips
around and sends a blast of ice.

The Hero races forward when

Head #3 spits poison.

The Hero leaps the steaming green puddle and continues

only to be knocked to the side by the dragon's tail which
sends his shield sliding into the distance.

The Hero looks at the shield and glances up at the dragon.

The Hero stands and holds his sword straight.

Head #4 stares at him and spits out red lightning but

the Hero does a roll fall towards the shield and picks it up.

Only describe in the script what the reader is actually seeing. You can't just tell the reader "Oh, and this is what the heads can do." Good luck. Sounds like an interesting script.