Wavetide Wyrm

Fateful Strike (This card can target and affect cards with Hexproof, Shroud, or Protection.)
The common, blue Wavetide Wyrm might not seem frightening at first; but do not underestimate its lethality. Being a fluidic lifeform, it can ooze and seep its way past all but the most stalwart of defenses. First drowning, then digesting its victims.