I think the Celts will win by 8+ on Saturday.
The Bucks are talented enough that they've been able to home court in this series. Chalk that up to the Celts being very young.
At home the Celts will get some big plays from their supporting guys, Jaylen and Jayson will be energized, Horford and Smart will make winning plays, and they'll bring it home.
I could be wrong, obviously. Horford might not have enough left in the tank. The role players might go cold. Giannis might finally have a genuinely transcendent game, after putting up numbers but mostly just getting his in this series.
But I feel good about the Celts on Saturday.