Shriekshower Elemental

When Shriekshower Elemental enters the
battlefield, draw a card, then discard a card at
the beginning of your next upkeep.
As long as you've drawn two or more cards this
turn, Shriekshower Elemental has +1/+0 and
flying.
As long as you've discarded a card this turn,
Shriekshower Elemental has +1/+0 and
menace.