Expedite

Target creature gains haste until end of turn.
Draw a card.

Judith, Carnage Connoisseur

Whenever you cast an instant or sorcery spell, choose one —
• That spell gains deathtouch and lifelink.
• Create a 2/2 red Imp creature token with "When this creature dies, it deals 2 damage to each opponent."

Ashnod's Altar

Village Rites

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Phyrexian Altar

Sacrifice a creature: Add one mana of any color.

Aphotic Wisps

Target creature becomes black and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
Draw a card.

Corrupted Conviction

Crimson Wisps

Target creature becomes red and gains haste until end of turn. (It can attack and {T} this turn.)
Draw a card.

Bladebrand

Target creature gains deathtouch until end of turn.
Draw a card.

Cremate

Exile target card from a graveyard.
Draw a card.

Prismite

Accelerate

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Goblin Engineer

When Goblin Engineer enters, you may search your library for an artifact card, put it into your graveyard, then shuffle.
{R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.