Serpentleaf Poultice

Untap target creature. If {g} and {u} were
used to pay for this card's mana cost, it
gets +3/+3 until end of turn. Otherwise, it
gets -1/-1.
Serpentleaf poultice, if properly made, is an
effective healing agent that dulls the pain but
not the mind. If the flower isn't picked properly,
its leaves are poisonous.