Spooked by the lightning flash, the basting mare leaps and throws her mounted knight to the sand-floor- blundering off into the dry storm.
Hope this is alright, I had a million and one references for the lightning, here's the best one:
The insparation came from the new medieval basting material... I was going to draw a rider. But i cant draw humans, you see. And oh! i never want to see another blooming triangle ever again.