Theros Beyond Death introduced Gods and Demi-gods, of all five colours. the ability “devotion” to a certain colour is the number of coloured mana cost to each of your permanents, so if you had a Rambunctious Mutt and a Savai Sabertooth your devotion to white would be 3.

here is a table of the five mono-coloured Gods:

Name	Colour	rating
Heliod, the sun crowned	white	4/5
Thassa, deep dwelling	blue	2/5
Erebos, Bleak Hearted	black	3/5
Purphoros, Bronze Blooded	red	4/5
Nylea, Keen-eyed	red	4/5

there are also other gods in Theros, two of which are in Theros Beyond Death, and others which are in older sets.

Theros is basically the Greek plain of existence. the next post will be on Zendikar Rising, the new set out now!