Here goes nothing:
Darius was sitting in his royal garden, overlooking the servants tending the plants. He breathed in and closed his eyes, expecting the sweet smells of the exotic flowers he had ordered the head-gardner to plant. Instead, he smelled smoke. He opened his eyes and noticed that the sun had been blocked by a single, pitch-black thundercloud. The cloud was constantly shifting it's shape, as if deciding on a form.
Suddenly, an lightning bolt flew out of the cloud and struck the tree which had been planted in Darius's father, Hystaspes. A gush of air blew from the tree and Darius flew backwards.
"What the..." said Darius as the cloud lowered itself onto the tree, which had become a chair. No, not a chair, a throne. The cloud shifted again and became a man dresses in black armor.
"Greetings, Darius," said the man. "I am Ba'raam, god of storms. I come to you to be my vassal, to strike like the lightning and gust like the wind. If you decide to work for me, and you will, you will be rewarded. Your name will be feared like the thunder. That is all for now."
A burst of light flashed from the god's chest, temporarily blinding Darius. When he regained his vision, Ba'raam was gone and the tree ashes.
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My god is Ba'raam, which is a mixture of Barak (ברק

and Ra'am (רעם

, which is Hebrew for lightning and thunder.