Hey all,
I've been thinking about the decks that contain an amount of big minions, because I am heavily inspired by Colossus of the Moon.
With this card, I guess I'll look forward to any deck that is not a competitive deck either. So any cool synergy would work. I haven't played big decks for a quite long time. So I know that there are certain classes that love to go big! I could see them as:
Shaman with Eureka! and more.
Mage with Luna's Pocket Galaxy (and more?).
Priest with Resurrection and more.
Paladin with Duel! (and more?).
Warrior with The Boomship and more.
Druid with Jungle Giants, and Astral Communion.
Warlock with a new Quest? Doubt it.
Hunter and Rogue won't say yes to the big guy.
Here is the main reason why I wanted to go BIG again :). The old Astral Communion photo I've found:

Do you think Big warrior and druid with big archetypes could be still a great deck? Because I would play them if they are good, or...
Is it possibly a trap? Because I honestly wanted to try these two decks.
If you think they are not great, suggest me an alternative way to play Colossus of the Moon. Give me more surge to play this card if you can!

EDIT: Another main reason I forgot to mention: send him in early turn or give him rush effect, and he will be at peak of his ultimate power that you shouldn't underestimate it, only a few big decks can do these ways!
Bonus: Dimensional Ripper will give you two unremovable copies of this big minion, only its weakness is transformation effect, and he doesn't care about AoE silence either. Except Plague of Death and Plague of Murlocs, pray that control shaman won't be a common thing.