This deck was created for roguedeckbuilder.com's . Any suggestions or points of feedback are appreciated!

The foundation of this deck is a mono blue strategy, with a twist to take advantage of Rally the Ancestors . There are a lot of creatures with enter the battlefield effects, especially Master of Waves. This combined with the bouncing effect of Jeskai Barricade should generate tons of tokens.

Sidisi's Faithful should provide decent disruption or defense if necessary. Combined with one of Hall of Triumph or Paragon of Gathering Mists, a 1 mana creature can block Siege Rhinos safely.

Other cards have decent interactions with the way Rally the Ancestors works as well. Even if Shorecrasher Elemental s are removed, they can still power up Master of Waves when they come into play via Rally. They can then be returned to the battlefield face down via activated ability. They won't be exiled on upkeep that way. Any Sidisi's Faithful that exploited themselves can be used to bounce creatures returned by Rally the Ancestors or return opponent's creatures to hand by exploiting themselves again.

Wall of Frost is a way to buy time and build up devotion for Thassa, God of Waves and Master of Waves. Frost Walker provides defense through offense, and provides a decent threat for low mana cost. It also gets powered up by Master of Waves's +1/+1 for elementals ability.