Suspicious Bookcase⁣ - Commander Masters: Extras⁣ (Uncommon)⁣ [977]

Suspicious Bookcase is a Defender creature that can tap for mana to make a target creature unblockable for a turn. This ability can enable sneak attacks or ensure key creatures get through for damage or effects. It fits well in control or tempo decks that utilise evasive strategies, though its low toughness means it won't survive much combat.