You know, it's funny. The cube is too fast for a spell effect like Lighthouse, but on a land it actually works. Since we run a high density of fixing there is room in decks to run spell-lands (e.g. look at his mana base, one colorless land is never going to slow him down). Also, games run long even in fast cubes. I watched one yesterday where he and his opponent each had a slugfest and depleted all their resources, with really nothing but lands on either side of the table. Loothouse was free digging in that game, and he won with 1 life point remaining.
I didn't really see Chandra in action, except in one game against me where he was already so far ahead. I scooped the turn before he was going to hit ultimate loyalty with Chandra. I can imagine worse things than casting double Electrolyze.