Potion Cauldron

When Potion Cauldron enters the battlefield or
when you pay {b}{b/r}{b/g}{t} You may exile an instant
card with converted mana cost 1 or less that could
target a creature you control from your hand.
{2}{t}:You may copy a card exiled with Potion
Cauldron. If you do, you may cast the copy
without paying its mana cost.
Yabba taught witches the secret of good potions is:
Use The Right Pot!