Hello Parsival ^^. You can still get Buffalo Leather and Hide from enemies in game. Certain Buffalo Hide related synths are not used in 1.19 newly introduced recipes but can still be used in synthesis from old recipes. Bandit or Wolf enemies tend to drop buffalo materials the most. I'm also on the Rabanastre server so drop me a /tell if you see me in game and I"ll provide you with some buffalo hide if you still need it. Hope this helps.