Three mana for one instance of instant speed looting isn't particularly exciting, but if you manage to create the 0/1 black Wizard by casting TransposeTranspose from your hand, you'll see where the spell's real value is
Viviens Invocation $1.49 Viviens Invocation is certainly no Tooth and Nail
Cards like Crashing Drawbridge and Otepec Huntmaster can mitigate this by giving the dinosaur haste, but Im not impressed
But in four-player Commander games, its a significant boost to Tifa if you attack all three opponents at once
Core: Most office stock has no blue or black core, so under strong light, the card is more transparent than a real MTG card
Put all of this together and the end result is Solitude almost certainly joining the likes of Path to Exile and Swords to Plowshares as being one of the ubiquitous pieces of white removal