In 2005, Saviors of Kamigawa , the final set in the Champions of Kamigawa block, would do a tweak on flip cards making a rare monocolor cycle that started as creatures and flipped into enchantments
As a creature type with a deep, rich history in Magic, vampires cover a lot of mechanical ground, but we can make some generalizations
If you dont really need the +1/+0 boost from Defiant Strike and all of your creatures are prepared to attack anyway, its fine to cast these cantrips on an opponents creature so that you dont get two-for-oned with a removal spell
I collect errors and see things like this from time to time
Quite the advertisement for modality and consistency
I can't tell you how many games I've won after pulling back a handful of awesome with this