E.g. you have Druid of the Claw on board (4/6) and opponent plays Fire Elemental (6/5).
Usually, you can run the dotc into the fire elemental and use Wrath or Swipe to finish it off. But since you needed to trade a minion and use a spell, you lost some tempo that turn (since you can only follow up with a smaller minion).
Or... you could starfire (kill the Fire Elemental), keep the dotc on board, and draw a card. No loss in tempo, and you drew a card.
Should work well vs: Fire Elemental, Savannah Lion, Sludge Belcher, Yeti, Sunwalker without shield, TBK... plus you can use it for face damage as a finisher.
Has anyone tried this (and at what rank) - and how did it go?