Yes folks, you have read the title right. Mono Blue Devotion or I call it Thassa and friends is back and the cause of it is a preview of a certain Blue Mythic card in Dragons of Tarkir. The card is Shorecrasher Elemental, and is the recent version of Morphling.
Check out the card below:
Here is a possible decklist after Dragons of Tarkir becomes legal in the format:
4 Gudul Lurker
4 Frost Walker
4 Hypnotic Siren
2 Omenspeaker
4 Thassa, God of the Sea
4 Master of Waves
4 Shorecrasher Elemental
1 Stratus Dancer
1 Bident of Thassa
1 Hall of Triumph
2 Military Intelligence
3 Singing Bell Strike
2 Stubborn Denial
2 Nykthos, Shrine to Nyx
18 Island
4 Flooded Strand