Sparkling Unicorn doesn't affect Serra's passive on creatures
With Sparkling Unicorn in play, Serra's passive healing effect seems not affected when it heals creatures. It correctly heals Serra by 2, but heals the creatures only by 1 point.
I got in play my Unicorn, which blocked a 2-power creature in the Opponent's turn. Then, at the begginning of my turn as Serra, her passive triggered, healing myself 2 points, but healing the "wounded" Unicorn only by 1 point. Considering it is a 3/3, the effect should have returned It at full toughness.