Bella & Edward, Eternal Lovers

{w}: Target Human you control gains first strike
until end of turn.
{b}: Target Vampire you control gains deathtouch
until end of turn.
Whenever a Human dies, you may pay {x}{b},
where {x} is that Human's mana value. If you do,
return it to the battlefield under your control at
the beginning of your next turn, except it's a
Vampire in addition to its other types.