Septuple Sepulchre

Defender, lifelink
Whenever you gain life, put a counter on
Septuple Sepulchre.
Remove seven counters from Septuple
Sepulchre: Sacrifice Septuple Sepulchre and gain
seven life.
When Septuple Sepulchre dies, you may exile it.
If you do, search your library for an enchantment
card, put that card onto the battlefield, then
shuffle.