This is my 100th "mini" puzzle on Crosshare. Just want to take a moment and share my appreciation with those of you who regularly solve my silly puzzles! If you're an alum of Purdue University, I appreciate you, too...you may just want to skip 13-Across
What you're bound to encounter if you wait too long to start watching a hit TV series like "Game of Thrones" (in case you're wondering, Bran Stark becomes king at the end of the series
12A
Thanks: Ger.
13A
No. 1 ___ (NCAA tournament team that's unlikely to lose its first round matchup...unless, of course, you're the 2023 Purdue Boilermakers)