It's always a creature card in other zones, regardless of how many cards are in your graveyard
Gift Of Immortality Gift Of Immortality is a way to ensure your creature stays on the battlefield
She obviously wants to lead a brand-new archetype in Gruul colors for things that tap and require mana like Feldon of the Third Path or Elder Druid, each of which can drop to one mana each
This isnt a problem exclusive to Krenko, either
The deck is surprisingly powerful, able to quickly flood the table with a huge token army that keep you safe and finish off your opponents with lethal combats, but also has some incredible consistency in card draw, interaction, and protection (Ferrous himself comes protected by common removal spells like Swords to Plowshares!)
The set features a ton of Assassin cards, with Ezio Auditore da Firenze taking the slot of the five-color Commander available to play all the Assassins in one deck