Chill of Cailleach

Linger (Whenever you cast an instant or sorcery
spell, you may pay {2} and exile this card from your
graveyard to add the bracketed phrase to that spell.)
[Tap target creature and scry 3,] then choose
one —
• Put two stun counters on target creature.
• Draw a card.
Beware the breath of the Wolf-Rider.