Granting shroud to all your shrines should protect them against everything other than mass enchantment removal, and you can go grab a key removal spell or new shrine using the second ability if youre in a pinch
There had been no statue before, of that he was certain
Plus, grabbing Energy from the discard pile is surprisingly easy
Making several Craterhoof Behemoths, Coiling Oracles, Elvish Champions, or Man-o-Wars off a Rite of Replication, Arachnogenesis, or Spell Swindle will often propel you far ahead of the table if you can pull it off
Pair it with some sacrifice synergies and all it truly costs you is a single mana
Normally youd have some tricky calculations over the value of these effects in a deck where many of your creatures will already have the keyword in question