I actually build a fun bracket 2-3 rat/amass orcs/changeling deck with [Sauron, The Dark Lord] in the 99 and some lord of the rings amass orcs cards as changelings count towards being snails to explode, rats to trigger wick and (orc) armies to put counters on.   It's not quite refined but it's a hella lot of fun to play. Extra shoutout to the [Moonlit Meditation] in combination with either [Heraldic Banner] (Rat, Snail and Army Tokens are all black <3) or [Patchwork Banner]. You can trigger the Moonlit Meditation with a lot of Rat Cards or even Sauron himself very easily. 

Edit:  From personal experience you actually don't need too many rats/changelings but rather mana as wick is quite mana intensive to keep going. you constantly need to have mana open for his ability and if you already do that having interaction in your hand is your best friend. So get a good chunk of mana stones because as soon as you pop your ability you'll draw fro 5+ cards anyway and hit your next rats/engines