Magic errata to remove more "offensive" aspects of the game

tldr

the 'cat' subtype is being removed from Rakshasa creatures (?)

"Umbra armor" will replace "totem armor" as a keyword ability (totem is offensive i guess?)

"Kindred" will replace "tribal" as a card type. (saw this one coming a mile away, tribal is now an offensive term i guess)

"Snake" will replace "Naga" as a subtype. (naga is offensive? naga please)