'Dangerous' England face Pakistan in World Cup final but rain threatens.

Melbourne -- Skipper Jos Buttler believes an "incredibly dangerous" England will be hard to beat in Sunday's Twenty20 World Cup final, but Pakistan say they have "all bases covered" -- and then there's the threat of rain.

After 44 matches spanning nearly a month, the Melbourne Cricket Ground will host the deciding game to determine who joins the West Indies as the only two-time winners since the tournament's inception in 2007.

Pakistan tasted victory in 2009 when they beat Sri Lanka by eight wickets in the final, while England won it a year later with a seven-wicket win over Australia.

England will be favourites against a Pakistan side who have roared back from losing their first two matches of the tournament.

Rain could though spoil the party with a 100 percent chance of showers forecast and even severe thunderstorms.

A reserve day has been set aside on Monday but the weather is again expected to be bleak, raising the prospect of a washout and the unthinkable -- the trophy being shared.

A minimum of 10 overs per side is needed to constitute a game, compared to five during the group stages. If the match starts on Sunday but isn't finished, it will resume on Monday from where it was halted.

Organisers on Friday tweaked the rules to give two hours' extra play on Monday should it be needed to complete the match.

Three games at the MCG in the Super 12 stage fell victim to rain.

Notwithstanding the elements, Buttler is confident England can finish the job after routing India by 10 wickets in the semi-finals. Resurgent Pakistan beat New Zealand by seven wickets to earn the right to meet them.

"I think we're a good team, I think that's probably where the performance comes from," Buttler said.

Some brilliant players in the team. When they play their best, we're a tough team to beat. Incredibly dangerous side, huge confidence in the group.

England have selection decisions to make with batsman Dawid Malan and fast bowler Mark Wood missing the semi-final injured. They were replaced by Phil Salt, who was not required to bat, and Chris Jordan, who took 3-43.

"We will see how they pull up and hopefully progress to be available for selection come the final," said Buttler of Malan and Wood.

Buttler's brilliant 80 and Alex Hales's blistering 86 did the damage against India, with the South Asian giant's esteemed bowling attack having no answers.

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