Added some more cards of every color, particularly adding to red and colorless.

Ruin Grinder, Faithless Salvaging, and Blessed respite might all be too weak to see play, but I like the cards so in they go for now. We'll see.

I added Icehide Golem back in. If it's a problem or if whims declare it, I'll take it out later, but for now, because of the golem (purely visual) subtheme in colorless, he's here to stay. I also think it's a good addition to snow decks as well as aggressive red, white, and probably jeskai shells, so it's definitely on the verge of too good, but hey, so is Arcum's Astrolabe.