River Wylde put the smile back on the face of trainer Nicky Henderson after taking his form to new heights with victory in the Sky Bet Dovecote Novices' Hurdle at Kempton.After watching leading Triumph and Supreme contender Charli Parcs take a late fall in the Adonis Juvenile Hurdle earlier on the card, the Seven Barrows handler had his spirits lifted as the six-year-old claimed the Grade Two contest to make it three wins from as many starts over hurdles.Travelling strongly throughout the two-mile prize, the 11-4 shot moved on with eventual runner-up Elgin past early leader and favourite Capitaine over the second-last.After jumping the final flight big, River Wylde knuckled down well on the run-in to cross the line three and a half lengths to the good.Following the race the winner was cut from 25-1 into 12-1 for the Supreme Novices' Hurdle by Sky Bet.Henderson said: "He is very quick. They've (owners) got two horses, Lough Derg Spirit is the other one, he won at Musselburgh, and it is amazing how similar they are. They both want two miles and want good ground and are both point-to-pointers."Both are incredibly quick hurdlers, now we have got to decide what to do with each of them. I think this one probably wants minding a bit, the other one might be a bit more streetwise."This fellow can drop in a bit and travel well throughout a race. He will be good off a strong pace, but he is just a bit babyish. I suppose one will run there (Cheltenham) and one at Aintree."