The 17-year-old Lamichhane, who is mentored by former Australian captain Michael Clarke, is currently playing in the Indian Premier League for the Delhi Daredevils.
Other Asians who have already confirmed for the match are Pakistan's Shahid Afridi and Shoaib Malik, and Thisara Perera of Sri Lanka.
Afridi and Malik were part of the Pakistan squad that won the ICC World T20 2009 at Lord's, while Perera was a member of the Sri Lanka side that lifted the silverware in Dhaka in 2014.
West Indies collapsed in Karachi to its lowest ever T20 score of 60 in 13.4 overs after opting to bowl after only arriving in the country late Saturday night.
Windies opener Evin Lewis laid the foundation of a successful 290-run chase with a brisk 67 that included seven fours and a six, before Shai Hope and Marlon Samuels came to the party by cracking attractive half-centuries.
Narine, who is appearing for the Lahore Qalanders franchise in the PSL, has been reported by the match officials after Wednesday night's game against Quetta Gladiators.
Zimbabwe also maintained their unbeaten run in Group B and progressed to the next stage with an 89 runs victory over Hong Kong.
Miller finished with figures of 5/20 while Roach claimed 3/15 to power West Indies to the 32-run win over UAE in a warm-up match of the ICC 2019 World Cup Qualifier on Thursday.
The former Proteas pacer has played in the IPL, BBL and BPL, is known as a T20 specialist as his performances with the white ball has earned him 263 wickets in 225 T20s.
The match will be played on May 31 and the ICC has confirmed its full support by granting it international status.
PCB chairman Najam Sethi had also revealed that he has penned a trilateral series between Pakistan, West Indies and Bangladesh in August.
The right-handed batsman was handed a year ban from playing all forms of cricket for a doping whereabouts rule violation.
PCB chairman Najam Sethi, however, said the West Indies will tour Pakistan for three T20 matches scheduled for March this year.
The West Indies chairman of selectors, Courtney Browne has revealed that the players who have opted out of the team want to play for the Pakistan Super League instead.
The Windies, along with Afghanistan, Ireland and Zimbabwe, had missed out on automatic qualification for the 2019 World Cup by finishing outside the top eight.
New Zealand won the first match by five wickets, before claiming the second match by 204 runs. The hosts also swept the Test series between the teams 2-0.
Trent Boult bagged a career best of seven wickets as he ripped pas the West Indies batting line-up, handing them a huge loss of 204 runs.
The left-handed batsman scored just 22 runs in the first ODI match at Whangarei and did not field during New Zealand's innings.
Bracewell went on to take 4/55, including the first and last wickets of the innings, as the West Indies were held to 248/9 in 50 overs after losing the toss.
Having not played for the West Indies since the T20I series against Pakistan last September, Bravo said his chances of a recall into the Caribbean side are highly unlikely.
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