Beings of Tash Kalar
Legendary beings are spice of the game. They are not tied to any faction, to allow for more interesting combinations. For players, summoning a legend presents their own little goal to fulfill. In all game forms, it is almost always worth to summon a legend.
Legends have various effects. All should be impressive and usually include lots of destruction. Summoning them is not easy, as they usually require either very strong position on the board, or planning over more turns. Also, some of them have to be summoned at the right space to maximize their effect.