Justin, Errant Wanderer

+1: Put a Dasani Water enchantment token on target land. Whenever the land is tapped, it produces one additional blue or green mana.
-1: Put a Justin Comes to Game Night enchantment token on target creature. Target creature must exert whenever it attacks.
-7: Summon clan. Search your deck for up to five creature cards and play them for no cost. Additionally, they gain haste and vigilance.