Stir the Steppes

At the beginning of your upkeep, put a card from each graveyard on the bottom of it's owner's library.
{w}: If Stir the Steppes isn't a creature, put a +1/+1 counter on it then it becomes a 0/2 Elemental Construct creature with Vigilance until end of turn. If it's toughness is 6 or more it is a creature with Vigilance permanently.
Fallow fields defend their fertile brethren.