Ravenous Seafang

Flap (Whenever this creature attacks, it gains flying
until end of turn.)
Seacreature (spells and abilities that affect this
creature affect it as though it was a sea creature
"kraken, fish, serpent, shark or octopus")
Whenever Ravenous Seafang attacks, mill five
cards and exile a creature with a converted mana
cost of 5 or less. If that creature was a sea
creature, gain life equal to its toughness.