Anthropocene Dinosaur

Low-flying (This creature can't be blocked except by creatures with flying and/or reach. You may have lose
this ability until end of turn as you attack with it.)
When Anthropocene Dinosaur loses
Low-Flying, it gains Dread and defending player
mills two cards. (Whenever one or more cards are put
into an opponent's graveyard from anywhere, this
creature gets +1/+1 until end of turn. To mill three
cards, put three cards from your library into your graveyard.)