Finding words to sum up the impact made by Sergio Aguero, during his debut against Swansea City in the Barclays Premier League isn't quite as difficult, as Brendan Rodgers' free flowing side found out, as trying to stop him.
The Argentine had been held back from making his competitive debut for City in the Community Shield against neighbours Manchester United after picking up blisters in the Dublin Super Cup.
Once City took the lead through the lively Edin Dzeko, who took his chance in the season's curtain raiser with both hands, manager Roberto Mancini saw the opportune moment to introduce his record signing.
Swansea were nothing more than partly wounded when Dzeko struck, and had shown enough charisma and guile on the ball to suggest that a City side who had faded so dramatically at Wembley last weekend, could be opened up once again.
Sadly for Rodgers' valiant Swans, the game was taken away from them within 10 minutes of Aguero's introduction.
His first may have been as easy a goal as he's likely to score during his City tenure, but the manner he laid the third goal on a plate for David Silva and the venom at which he struck his second was proof of the variety he can lend Mancini's side, not least his match winning pedigree.
"Sergio is a photocopy of Romario, they are the same player," Mancini said.
While the Brazilian reached 1000 career goals dubiously, there was nothing worth debating about the genuine threat of Aguero, and the quality he can lend to City's quest of claiming honours this season, and ominously for the remainder of the Premier League, Mancini insists there is more to come.
"I know Aguero very well but I don't think he is 100%," he added. "He played in the Copa America and he needs to do more in training, but I am happy because he scored two important goals.
“For me, he is a fantastic striker, and still young, but he will be a fantastic player for us in the future.
“He scored a lot of goals in Spain and Argentina and is a fantastic striker.”
Despite the large spending power of City's illustrious owners, the club shelled out a record fee for Aguero, reportedly £38 million. Like many big money signings, owners and fans alike will be demanding a return on their investment, but for a start, the 23-year-old laid down the perfect downpayment.
"He's come in, £38million is a big price, but it's £38million well spent. We've not seen much of him so far, the manager has kept him well protected," said Joe Hart.
Vincent Kompany added: "He's come in with a surprise. The great thing for me was that he was defending too. That's important."
A man who knows plenty about winning major honours for City, is Mike Summerbee, whose nine-year career at the club saw him rack up over 400 appearances for the club.
Summerbee was integral to City's celebrations after they won the FA Cup in May, and the man who knows the club inside out needs no convincing as to Aguero ability on the world stage.
"Aguero has to be one of the top players in the world on that display," he said.
"He does all the simple things well, then suddenly 18 yards out he turns into a man who can score goals from nothing.
"His second goal was something people dream about and it was a team effort all the way through, but he was the icing on the cake."
With Carlos Tevez's future still in doubt, despite Gary Cook confirming the forward would stay at the Etihad Stadium beyond the closing of the summer transfer window, and the role of Emmanuel Adebayor, Craig Bellamy and Roque Santa Cruz diminishing by the day, Aguero is expected to become the club's No.1 hitman, a role he says he'll thrive upon for the foreseeable future, a worrying omen for their domestic and European opponents.
"I am happy. The start was really good and I want to keep like this. It was nice," Aguero said.
"I had a chance to play a little bit and I enjoyed it. I helped the team and I want to keep doing the same in the future."
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