Falem, Purgatory Captain

Whale Hunt - Whenever a blue non-artifact creature with mana value, power, or toughness 4 or greater enters the battlefield, Falem, Purgatory Captain gets a +1/+1 counter and gains vigilance until end of turn.

High Tide - Blue non-artifact creature spells with mana value, power, or toughness 4 or greater you cast cost {1} less to cast.