Set details
Morningtide is the second and final set of Lorwyn block. The following set, Shadowmoor, is not part of Lorwyn block, as originally announced, but the first set of a new block, codenamed "Jelly" and "Doughnut." However, these two blocks will rotate into and out of official tournament formats as though they were a single block.

As revealed in an advertisement in the trade publication ICv2 and later confirmed by Mark Rosewater in his column, Morningtide expands upon Lorwyn flavor and theme by focusing on at least five classes (Soldiers, Shamans, Wizards, Warriors, and Rogues) as well as a few minor class-based tribes (Druids, Archers, Knights, Clerics, and Assassins) in addition to the eight races of Lorwyn (Kithkin, Merfolk, Faeries, Elementals [Flamekin and Greater], Goblins, Giants, Treefolk, and Elves)

The three new mechanics are Prowl, Reinforce, and Kinship.