Mystery Booster 2

Tenacious Pup

When Tenacious Pup enters the battlefield, you gain 1 life. You get a one-time boon with "When you cast a creature spell, that creature enters the battlefield with an additional +1/+1 counter, trample counter, and vigilance counter on it."

When Tenacious Pup enters the battlefield, you gain 1 life. You get a one-time boon with "When you cast a creature spell, that creature enters with an additional +1/+1 counter, trample counter, and vigilance counter on it."

Alchemy: Innistrad

When Tenacious Pup enters the battlefield, you gain 1 life. When you cast your next creature spell, that creature enters the battlefield with an additional +1/+1 counter, trample counter, and vigilance counter on it.