
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."
Tenacious Pup has 2 printings, first in Alchemy: Innistrad (2021). EDHREC ranks it #31,821 among Commander cards. It has 1 official ruling.
Cards that show up in the same decks on EDHREC.