A few kilos of metal, instruments, wood, and wool. “Elefant” is an unusual circus piece that balances reflective moments with heartwarming humor. The elephant in the circus has had its day. Yet this good-natured, absurd, and almost otherworldly giant embodies the daring spirit of the circus. And so “Elefant” is also grand, extraordinary, raw, and a bit risky—yet at the same time delicate, gentle, and graceful.