Feyling Forest

({t}: Add {g}.)
When Feyling Forest enters the battlefield, sacrifice
a land.
Cumulative Upkeep—Sacrifice a land and pay
2 life.
Creatures you control can't attack.
Prevent all damage that would be dealt to you.
Across the path, under the moss,
Beware the Wrath of the Alidoss...
—first couplet of 'Warning the Children'