Urza's Saga

Flying When you cast a creature spell, sacrifice Skittering Skirge.

First strike {1}{B}: Regenerate Sanguine Guard.

Flying Whenever Ravenous Skirge attacks, it gets +2/+0 until end of turn.

Sacrifice a creature: Phyrexian Ghoul gets +2/+2 until end of turn.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Whenever Order of Yawgmoth deals damage to a player, tha...

Sacrifice an enchantment: You gain life equal to the sacrificed enchantment's converted mana cost.

{B}: Looming Shade gets +1/+1 until end of turn.

Whenever Hollow Dogs attacks, it gets +2/+0 until end of turn.

Flying When Dark Hatchling enters the battlefield, destroy target nonblack creature. It can't be regenerated.

When Cackling Fiend enters the battlefield, each opponent discards a card.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Sacrifice Blood Vassal: Add {B}{B}.

Flying When Abyssal Horror enters the battlefield, target player discards two cards.

{T}: Return Wizard Mentor and target creature you control to their owner's hand.

Protection from red Cycling {2} ({2}, Discard this card: Draw a card.)

Protection from black Cycling {2} ({2}, Discard this card: Draw a card.)

{2}{B}, {T}: Exile up to three target cards from a single graveyard.

When Stern Proctor enters the battlefield, return target artifact or enchantment to its owner's hand.

Flying Whenever Somnophore deals damage to a player, tap target creature that player controls. That creature doesn't untap during its controller's ...

Cycling {2} ({2}, Discard this card: Draw a card.)

Flying When Peregrine Drake enters the battlefield, untap up to five lands.

{U}: Untap Morphling. {U}: Morphling gains flying until end of turn. {U}: Morphling gains shroud until end of turn. (It can't be the target of spel...

{U}: Untap Horseshoe Crab.

When Great Whale enters the battlefield, untap up to seven lands.