Answered June 5th, 2019

Kawhi Leonard logged his 13th 30-point game of the postseason. The only other players with 13+ 30-point games in a single playoff run are LeBron, Kobe, A.I., Shaq, Hakeem and MJ; so he's in some pretty good company.

who was the last player with 13 games with 30+ points in a postseason
Interpreted as:
Who was the last player with 13 or more games with 30+ points in a postseason?