Finana, Licentious Sea Maiden

Skulk (This creature can't be blocked by creatures
with greater power.)
Whenever Finana, Licentious Sea Maiden deals
combat damage to a player, they discard card at
random and mill X, where X is Finana's power.
Then if that player has seven or more cards in
their graveyard exile a card from it, that player
loses life equal that card's mana value.