Relvithian, Elder of Water

Trample, Envision 3 (Whenever you cast a spell,
this creature gets any chosen combination of +1
to power and toughness until end of turn)
As long as your devotion to blue is 5 or less,
Relvithian, Elder of Water isn't a creature.
Relvithian, Elder of Water's Power and
Toughness are equal to the number of blue
permanents you control.
Whenever you cast a spell or ability, scry its
converted mana cost.