Lerae, the Silk Blade

Double strike, trample
Whenever Lerae attacks, switch its power and toughness until end of turn.
{0}: Prevent all damage dealt to Lerae by spells or blocking creatures with converted mana cost 3 or less until end of turn. Prevent all damage dealt by Lerae to all blocking creatures.
"I can't comprehend how she manages to swing her blade without cutting her dress."