Misty Lake

Whenever a nonartifact, nontoken creature you control is put into your graveyard from play, put
a 1/1 white and black spirit creature token with
flying and lifelink into the battlefield.
Sacrifice six spirit creatures: each hydra player
plays the top card of its library without paying
its mana cost.
"drink deep now, from misty lake.
A soul to give, six souls to take."