The 'Let Your Power Shine' ability also lets you draw a card whenever you remove one or more damage from one of your characters
A Reddit compilation of tens of thousands of matches put it in the same win rate bracket with Ironworks, a deck that won two of the Grand Prix in the data set, and Dredge, which won the other in a no graveyard hate metagame
Ping damage is always nice, though I dont need to harp on how fragile a 0/1 creature is
Ragavan, Nimble Pilferer is so significant against these decks because they generally cannot interact with the monkey, which means it can start generating a lot of treasures and allows the fair deck to cast spells and progress the board while also holding up interaction like Counterspell or Archmages Charm for any potential broken plays
You can also find the lists for my decks over on Archidekt if you want to dig into how I put together my own decks and brews
If you cast one, you won't have to pay an additional the first time you cast the other