Reclusive Wight

At the beginning of your upkeep, if you control another nonland permanent, sacrifice this creature.

Reprocess

Sacrifice any number of artifacts, creatures, and/or lands. Draw a card for each permanent sacrificed this way.

Sanguine Guard

First strike
{1}{B}: Regenerate this creature.

Sicken

Enchant creature
Enchanted creature gets -1/-1.
Cycling {2} ({2}, Discard this card: Draw a card.)

Skirge Familiar

Skittering Skirge

Flying
When you cast a creature spell, sacrifice this creature.

Sleeper Agent

When this creature enters, target opponent gains control of it.
At the beginning of your upkeep, this creature deals 2 damage to you.

Healing Salve

Choose one —
• Target player gains 3 life.
• Prevent the next 3 damage that would be dealt to any target this turn.

Spined Fluke

When this creature enters, sacrifice a creature.
{B}: Regenerate this creature.

Tainted Aether

Whenever a creature enters, its controller sacrifices a creature or land of their choice.

Unnerve

Unworthy Dead

Vampiric Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying.
Whenever a creature dealt damage by enchanted creature this turn dies, put a +1/+1 counter on that creature.

Vebulid

This creature enters with a +1/+1 counter on it.
At the beginning of your upkeep, you may put a +1/+1 counter on this creature.
When this creature attacks or blocks, destroy it at end of combat.

Urza's Saga