Prophecy is the third set of the Masques block, and when released, was one of the least popular sets ever. Though many casual players liked it because of the enormous Avatar and Winds cycle, both of which had a big effect at a big cost; it had relatively little impact at that time. The main theme and mechanic of the set were the lands; specifically, whether lands were untapped or not.

Similarly, the Rhystic cards gave the player an advantage if no other players paid a certain amount of mana. Prophecy introduced no keyword mechanics.

Story: Keld has declared war on Jamuraa in order to reclaim 'hero's blood', known also as tufa, which is a type of fossil fuel to run great machines. The city-states of Jamuraa form the Kipamu League and then repulse the invaders.