Urza's Saga

When an opponent controls a creature with power 4 or greater, if Hidden Predators is an enchantment, Hidden Predators becomes a 4/4 Beast creature.

When an opponent plays a nonbasic land, if Hidden Herd is an enchantment, Hidden Herd becomes a 3/3 Beast creature.

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Enchant creature Enchanted creature gets +3/+3 and has trample. {G}: Regenerate enchanted creature.

You may play an additional land on each of your turns.

At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X i...

Enchant creature Enchanted creature gets +1/+1 for each Forest you control.

When an opponent casts a creature spell, if Opal Archangel is an enchantment, Opal Archangel becomes a 5/5 Angel creature with flying and vigilance.

If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chose...

If a red spell would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.

Whenever an opponent casts a creature spell, if Opal Acrolith is an enchantment, Opal Acrolith becomes a 2/4 Soldier creature. {0}: Opal Acrolith b...

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the nex...

Whenever a player taps an Island for mana, Scald deals 1 damage to that player.

At the beginning of your upkeep, you may put a verse counter on Rumbling Crescendo. {R}, Sacrifice Rumbling Crescendo: Destroy up to X target lands...

Enchant creature Whenever enchanted creature deals combat damage to a player, that player sacrifices a land.

Creatures can't block.

At the beginning of each player's end step, Antagonism deals 2 damage to that player unless one of their opponents was dealt damage this turn.

At the beginning of your upkeep, you may put a verse counter on Vile Requiem. {1}{B}, Sacrifice Vile Requiem: Destroy up to X target nonblack creat...

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 c...

Whenever a creature enters the battlefield, its controller sacrifices a creature or land.

Whenever another card is put into a graveyard from anywhere, exile that card.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pestilence. {B}: Pestilence deals 1 damage to each creature and...

Whenever a player casts a spell, that player discards a card.

Sacrifice No Rest for the Wicked: Return to your hand all creature cards in your graveyard that were put there from the battlefield this turn.