Theros block

The Theros block consists of the large expansion Theros, and the two small expansions Born of the Gods , and Journey into Nyx. It is the 20th block in Magic: The Gathering history. The block was released over 20132014.

Block details
Theros block features a top-down design inspired by Greek mythology. Mechanically it is also very much about tapping into the potential of enchantments.

Development codenames
The development codenames for the Theros block expansions were "Friends", "Romans", and "Countrymen".

Themes and mechanics
The Theros block had an "enchantments matter" theme and introduced enchantment creatures and enchantment artifacts. Each set featured a part of the pantheon of Gods. The keywords bestow, heroic, scry, monstrosity, inspired, and devotion were featured in two or three of the sets.

Mega cycles
The Theros block has two mega cycles: the Temples and the Pantheon of Gods.

There is a mirrored pair spanning two sets in Returned Centaur and Forsaken Drifters. Both are Zombie cards for that mill for four cards. However, Returned Centaur does this when he enters the battlefield and can force an opponent to do so, while Forsaken Drifters do it when they die and it will always be its controller who mills. Also, Forsaken Drifters is 4/2 while the Returned Centaur is 2/4.