Each OP11 booster box contains 24 packs and each pack contains 6 cards with 127 + 1 possible types in total
That you have no personal ability to trigger Shapers Sanctuary means its fairly locked into sideboard only space (metagames could arise that might persuade us to gamble on the card maindeck, but its unlikely)
I also have included a lot more options this time since an argument can be made for many cards
We are operating on pure speculation unless there is an actual legitimate source
Creature Enchantment - Horror Spark Double You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary
Better than Divination In contrast, the black variant Sign in Blood is cheaper in mana, so it can be played in decks with less lands, thus giving us a better rate in spells, and Read the Bones includes card selection, so it can be used to dig even deeper into the deck, or have a better rate in spells drawn then its blue counterpart