Does anyone know of a good searchable card database for the game?

http://deckbox.org/games/whi/cards

Yup deckbox.org is definitely the best.

I used to use war.dbler.com but the don't keep things up to date like deckbox.org.

deckbox.org is good

if u want an "offline" database you could use http://www.octgn.net/