It's called Solotrick. Do you know what a macro is? Well, u just need to macro w (feed) while splitting by using macros, like x16 or triple, find out combinations to make your solotrick more practical Just replay when he does in the video then try to do it by yourself
When i got x84 16 presplit (just like me) Everyone : gg Slater When Scythe got x10 double : Everyone : OMMMMMG SCYTHE OMMMG ! BEST PLAYER EVER OMFG OMFG OMFG OMFG YOU SO PROOOOO SCYTHE !!!!!