Pearly Viper

Deathtouch
When Pearly Viper enters the battlefield, if {w}{w}{g} or {w}{g}{g} was spent to cast it, you may destroy target artifact or enchantment. If
{b}{b}{g} or {b}{g}{g} was spent to cast it, you may
put two -1/-1 counters on target creature. Otherwise, target opponent loses 2 life and you gain 2 life.
Battle Tip: Cast before swine.