An 8-cost for what could be 18000 power worth of characters
Archon of Cruelty If you want to reanimate, Sneak Attack, and otherwise cheat a creature into play, Archon of Cruelty is often one of your best options due to the overwhelming advantage of eating your opponents board, providing immense card advantage, and pressuring life totals
On his standard card, Gandalf the Grey appears holding Glamdring, and offers the player multiple single-use abilities whenever they cast an instant or sorcery spell, including tapping or untapping a permanent, dealing three damage to each opponent, copying an instant or sorcery spell, or placing Gandalf on top of their library
For a full rundown of the contents in each booster type from Adventures in the Forgotten Realms , you'll want to check out the Adventures in the Forgotten Realms product overview