San Diego Comic-Con 2018

Gideon of the Trials

[+1]: Until your next turn, prevent all damage target permanent would deal.
[0]: Until end of turn, Gideon becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.
[0]: You get an emblem with "As long as you control a Gideon planeswalker, you can't lose the game and your opponents can't win the game."

Jace, Cunning Castaway

[+1]: Whenever one or more creatures you control deal combat damage to a player this turn, draw a card, then discard a card.
[−2]: Create a 2/2 blue Illusion creature token with "When this token becomes the target of a spell, sacrifice it."
[−5]: Create two tokens that are copies of Jace, except they're not legendary.

Liliana, Untouched by Death

[+1]: Mill three cards. If at least one Zombie card is milled this way, each opponent loses 2 life and you gain 2 life.
[−2]: Target creature gets -X/-X until end of turn, where X is the number of Zombies you control.
[−3]: You may cast Zombie spells from your graveyard this turn.

Chandra, Torch of Defiance

[+1]: Exile the top card of your library. You may cast that card. If you don't, Chandra deals 2 damage to each opponent.
[+1]: Add {R}{R}.
[−3]: Chandra deals 4 damage to target creature.
[−7]: You get an emblem with "Whenever you cast a spell, this emblem deals 5 damage to any target."

Nissa, Vital Force

[+1]: Untap target land you control. Until your next turn, it becomes a 5/5 Elemental creature with haste. It's still a land.
[−3]: Return target permanent card from your graveyard to your hand.
[−6]: You get an emblem with "Whenever a land you control enters, you may draw a card."