Creature - Merfolk Soldier
Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Concord — As long as there are four or more card types among permanents you control, Bubbledome Waveblade gets +1/+1.
“I'll never get used to the air in here, but Myrmidon was really onto something when he built this place. I'll guard it with my life.”