Maverick players will definitely have a lot of fun playing Elvish Reclaimer alongside Knight of the Reliquary. They can support and feed each other with more lands in the graveyard than ever before.
With the help of a new Wrenn and Six planeswalker it will be really easy to cycle lands in and out of your graveyard. This can make Ghost Quarter and Bojuka Bog turns really effective.
The last but not least two possible applications for Elvish Reclaimer are Titan Amulet decks and mono-green Tron that runs Crucible of Worlds, where it can easily fetch for Tron lands.