This Druid deck aims to shine light on the potential of Pilfered Power, while dropping a number of large minions after playing Celestial Alignment.
I'm currently experimenting with the early game, with a number of potential token activators for Pilfered Power being candidates. A short list of ideas not currently in this list: Pirates + Patches the Pirate, additional Stealth minions (Cloakscale Chemist, Sneaky Delinquent), 0-cost minions (tried with less than promising results, but eh), more Treants (?).
After Celestial Alignment is played, any giant will also be playable except for Sea Giant on an empty board, or Mulchmuncher if no friendly Treant has died. Interestingly, my one successful game allowed for the giants to empower Pilfered Power, after the Celestial Alignment had my mana at about 3.