Perfect Checkmate Chance

When Perfect Checkmate Chance enters the battlefield you may search your library for a basic
land and put it on the battlefield tapped.
At the beginning of your upkeep, if you control a nonlegendary, nontoken copy of a legendary
creature and 10 or more treasures, you win the
game.
"And don't you want to make a clever checkmate
right at the moment the conversation reaches its
climax?" - Pandora's Actor to Ainz