Sanitarium Skeleton

{2}{B}: Return this card from your graveyard to your hand.

Deadly Dispute

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Insectile Aberration

Delver of Secrets

At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform this creature.

Delver of Secrets // Insectile Aberration

Tortured Existence

{B}, Discard a creature card: Return target creature card from your graveyard to your hand.

Serrated Scorpion

When this creature dies, it deals 2 damage to each opponent and you gain 2 life.