Miami New Drama steps onto the Miami theater scene with a bold production of “The Golem of Havana.” opening this weekend at the area’s newest theater company, Miami New Drama, is decidedly not humble. It’s an ambitious, budget-busting musical, with full, live orchestration and a cast of 12. The setting shifts from 1950s Cuba on the brink of revolution to 1940s Hungary on the precipice of the Nazi juggernaut. There are explosions, machetes, rainstorms, vivid nightmares, military executions, and the spilling of noble blood. And that’s just in the first act.