2016-07-13 : Abilities that define a creature’s power and toughness apply while that card is in your graveyard, but abilities that add or subtract from it don’t. For example, the ability of Sage of Ancient Lore applies to determine the Zombie token’s power and toughness, but the ability of Liliana’s Elite doesn’t.

2016-07-13 : Any enters-the-battlefield abilities of the copied creature card will trigger when the Spirit token enters the battlefield. Any “as [this creature] enters the battlefield” or “[this creature] enters the battlefield with” abilities of the creature card will also work.

2016-07-13 : If the copied creature card has an ability that defines its power and toughness, such as that of Sage of Ancient Lore, the Spirit token will still have base power and toughness 1/1.

2016-07-13 : If the copied creature card has {X} in its mana cost, X is considered to be 0.

2016-07-13 : If you copy a double-faced creature card, the Spirit token won’t be able to transform.

2016-07-13 : The Spirit token has the color and mana cost (and thus converted mana cost) of the original card; the Zombie token has a converted mana cost of 0.

2016-07-13 : The Spirit token will be on the battlefield before the Zombie token enters the battlefield.

2016-07-13 : The power and toughness of the Zombie token are set as it’s created based on the card as it last existed in your graveyard. They won’t update if the exiled card’s power and toughness change.