Sorcerio, the Bumbling Mage

{b}: Target creature gains deathtouch until end
of turn.
{1}{g}: Target creature gains +1/+1 until end of
turn.
{2}{w}: Regenerate target creature.
1{w}{b}{g}, Sacrifice a creature: Search your library
for a card named Vial of Elf's Blood and put it
onto the battlefield.