Rufus, Cunning Duelist

Whenever a creature deals combat damage less
than the amount listed on their card, gain {e}
When you control any creatures, transform
this card into Rufus, Deceptive Showboat.
{e}{e}: Rufus, Cunning Duelist gains
first strike until end of turn.
And then Rufus was gone, back into the mist ready
for another series of sneak attacks.