Vivian, Avid Biomancer

+1: Create 1/1 green Illusion creature token. Untap target land.
-1: Create a 3/3 green Illusion creature token with hexproof and trample. Vivian, Avid Biomancer gains hexproof until end of turn.
-7: Search your library for six lands and put them onto the battlefield. Illusions you control get +1/+1 until end of turn for each land you control.