Otters received substantial blue-red typal support in Bloomburrow, where they specialize in instants, sorceries, and noncreature spells. Their strategy combines a creature army with the traditional spellslinger game plan.
Valley Floodcaller can untap your creatures as noncreature spells are cast, while Coruscation Mage turns those spells into direct damage. Cheap cantrips give Otters repeated triggers without quickly exhausting your hand.
