Some powerful item combinations make their way into the game, as do some great action cards such as Light the Fuse
Ward forces your opponents to spend even more mana to remove it, making it a good trade for you either way
As far as cards to pitch to Force are concerned, Mantis Riders, Phantasmal Images, Reflector Mages, Meddling Mages, and Unsettled Mariners (potentially) are on the roster
Especially in cases where cards are rated similarly elsewhere, this factor will favor the card thats doing something a bit more off the beaten path
Sacrificing lands can be used to a deck's benefit, whether its to trigger a specific effect or to increase the number of them in a graveyard, and cards like Elvish Reclaimer fit naturally into a strategy of abusing land effects