Ulamog's Prodigy

When you cast Ulamog's Prodigy, destroy a
random permanent target player controls.
Annihialator 1 (Whenever this creature attacks,
defending player sacrifices a permanent)

Prevent all combat damage dealt to
Ulamog's Prodigy.
When Ulamog's Prodigy dies shuffle
up to 3 target cards back into your library.