Plesioth

When Plesioth attacks, you may exert it. If you do,
choose one:
• Inflict target creature with Sleep.
• Deal 1 damage to up to three target creatures and Inflict them with Waterblight.
• Plesioth is unblockable this turn.

Aquatic Affinity - Plesioth gains +1/+1 for each
card named Waterblight on the battlefield.