Star Reef - 3

Strategy
Choose Matilda in Druid, Bomb in Cannoneer and The Blues in Rogues. Heal with Matilda if the birds' health are not full and if they're full, attack with her. Then attack with the others (All attacks focus on the Necromancer first, then the Zombie and the last one, Ship's Kobold). Repeat this over until you win or either lose.