Dlc dinos on fjordur

[Ozku2]

I was wondering is there any way to get dlc creatures on fjordur, like for example have the x spino being a rare spawn in the place of the normal spino, like the r giga has a 50% chance of being an r giga or a normal giga, i feel like it is but idk how, pleas hewp

[Ozku2]

and add reapers that have like 10% chance to be r reapers if someone can help, Ozku2#4091 in discord