Fertile Root Shaman

Whenever Fertile Root Shaman enters the battlefield, create a 1/1 green and blue elemental
creature token with, Defender, and "When this
creature enters the battlefield, you may tap a target creature. It becomes Bound by this creature.
Creatures with Bound don't untap during its controllers upkeep. At the beginning of your end
step, you may put a -1/-1 counter on a creature
bound by this creature, then this creature gets a
+1/+1 counter."