Aspect of Water

When Aspect of Water enters the battlefield Scry 2, Draw 2, target creature gains flying, and target creature looses reach and flying
During cleanup of end phase, this enchantment goes to exile
If this card is countered, shuffled into library, milled, put into graveyard from anywhere, put it in exile instead
If this card is drawn, reveal it, and put it in exile, if your Commander is Arex, Aspect of Elements, then this costs {1}{u} less to cast from exile