Mint Petal, Arcane Researcher

Deathtouch
Whenever you cast a non-creature spell, look at
the top card of your library. You may reveal that
card and put it into your hand if it's an instant or
sorcery card. Otherwise, put it into your
graveyard.
{2}{u}{b}, {t}: Create a 2/1 legendary black snake
token with Deathtouch named Datura. Then
return an instant or sorcery card from your
graveyard to your hand.