Kareem Abdul-Jabbar and Wilt Chamberlain were tied for the most games in the NBA Finals with 20+ points and a field-goal percentage of 70.0 or above, with 5 games.

most nba finals games with 20 points on on 70% shooting
Interpreted as:
most NBA finals games by a player with 20 or more points on on 70% or higher shooting
Kareem Abdul-JabbarKareem Abdul-JabbarNBA Finals514474.432.628.
Wilt ChamberlainWilt ChamberlainNBA Finals513875.347.827.624.
James WorthyJames WorthyNBA Finals412080.344.
Magic JohnsonMagic JohnsonNBA Finals410575.042.326.
Horace GrantHorace GrantNBA Finals36678.439.322.
Kevin McHaleKevin McHaleNBA Finals37674.438.325.
Kevin DurantKevin DurantNBA Finals26570.639.
Kawhi LeonardKawhi LeonardNBA Finals25173.936.625.
Pau GasolPau GasolNBA Finals24876.240.924.
Tony ParkerTony ParkerNBA Finals25071.437.
Shaquille O'NealShaquille O'NealNBA Finals27078.446.
Clyde DrexlerClyde DrexlerNBA Finals25772.436.528.
Adrian DantleyAdrian DantleyNBA Finals25980.839.529.
Michael CooperMichael CooperNBA Finals24378.927.
Larry BirdLarry BirdNBA Finals26274.244.531.
Maurice CheeksMaurice CheeksNBA Finals24378.338.521.
Bob GrossBob GrossNBA Finals24975.932.524.
Dave CowensDave CowensNBA Finals25273.332.
Bill RussellBill RussellNBA Finals24680.
Tom SandersTom SandersNBA Finals24270.837.521.
Frank RamseyFrank RamseyNBA Finals24372.726.
Deandre AytonDeandre AytonNBA Finals12280.038.722.
LeBron JamesLeBron JamesNBA Finals14071.441.940.
Jimmy ButlerJimmy ButlerNBA Finals14070.044.940.
Anthony DavisAnthony DavisNBA Finals13275.039.632.
StatMuse has game-level data for field-goal percentage going back to the 1956 Finals.