Sealed Cube S0, E3: third deck building round

For the third build I'm looking at GW creatures splashing red. Rightmost column in the picture is a sideboard with situational cards (artifact/enchantment removal, Chandra's Fury) and a number of cards that didn't make the cut but might occasionally find a spot. 

With two red sources and two ways to find a mountain (plus Pale Recluse to find green or white) I feel that a single mountain is enough for 4 red mana symbols. 15 white and 9 green manq symbols with two red and one white source already in mean I should get away with 7 Plains, 6 Forests.

As in the previous builds, the primary build isn't really using much (well, maybe Moonglove Extract and Warped Landscape) that would be used for an alternative UB build, so I did that one, too. In this photo, the sideboard is top left.

This is a straightforward two color deck that mostly needs early black, so with 19 black and 15 blue mana symbols I will run 10 swamps and 7 islands and add Forbidden Orchard to the sideboard as additional option.