MAKE SURE to BACKUP before applying this, for I have not tested it..
In skill.c
Comment out these lines
https://github.com/rathena/rathena/blob/master/src/map/skill.c#L5413
https://github.com/rathena/rathena/blob/master/src/map/skill.c#L13909
Then change the switch case formula of Redemptio here
https://github.com/rathena/rathena/blob/master/src/map/skill.c#L5568
to this
sc_start(src, bl,SC_BLESSING,100,10,300);
sc_start(src, bl,SC_INCREASEAGI,100,10,300);
sc_start(src, bl,SC_KYRIE,100,10,300);
sc_start(src, bl,SC_GLORIA,100,5,300);
sc_start(src, bl,SC_MAGNIFICAT,100,5,300);
sc_start(src, bl,SC_ANGELUS,100,10,300);
break;