Omen of the Dead

Flash
When Omen of the Dead enters, return target creature card from your graveyard to your hand.
{2}{B}, Sacrifice Omen of the Dead: Scry 2.

Inspiring Overseer

Flying
When Inspiring Overseer enters, you gain 1 life and draw a card.

Ephemerate

Exile target creature you control, then return it to the battlefield under its owner's control.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Supernatural Stamina

Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Virus Beetle

When Virus Beetle enters, each opponent discards a card.

Thraben Inspector

When Thraben Inspector enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Vampire Sovereign

Flying
When Vampire Sovereign enters, target opponent loses 3 life and you gain 3 life.

Spirited Companion

When Spirited Companion enters, draw a card.

Goliath Paladin

Vigilance
When Goliath Paladin enters, you take the initiative.

Thorn of the Black Rose

Deathtouch
When Thorn of the Black Rose enters, you become the monarch.