LOL oops!
BUG ALERT CASTLING

the Green Groundhog Gambit!
(https://www.urbandictionary.com/define.php?term=Blue%20Chicken%20Gambit)

try it the magic rook was suddenly a shark in shallow water eating my undefended babies a bloodbath i tell ya
I took a corner rook with my bishop, next move the enemy player castles just his leftover king, my bishop disappears and his rook reappeared!!!
Everyone in the game saw and said WHAT THA. 4 player team game (loss haha).