L'allégeance de Ravnica

{W}, {T}: You gain 2 life. {U}, {T}: Draw a card, then discard a card.

When Undercity Scavenger enters the battlefield, you may sacrifice another creature. If you do, put two +1/+1 counters on Undercity Scavenger, then...

Draw two cards. Addendum — If you cast this spell during your main phase, you gain 2 life.

Scorchmark deals 2 damage to target creature. If that creature would die this turn, exile it instead.

{T}: Add {G} or {U}. {G/U}{G/U}{G/U}{G/U}, {T}, Sacrifice Simic Locket: Draw two cards.

When Watchful Giant enters the battlefield, create a 1/1 white Human creature token.

Flying {1}{W}: Senate Courier gains vigilance until end of turn.

Flash Enchant creature Enchanted creature can't attack or block, and its activated abilities can't be activated.

Summary Judgment deals 3 damage to target tapped creature. Addendum — If you cast this spell during your main phase, it deals 5 damage instead.

When Dagger Caster enters the battlefield, it deals 1 damage to each opponent and 1 damage to each creature your opponents control.

Deathtouch

When Rumbling Ruin enters the battlefield, count the number of +1/+1 counters on creatures you control. Creatures your opponents control with power...

Target creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.) Draw a card.

When Footlight Fiend dies, it deals 1 damage to any target.

Put a +1/+1 counter on target creature you control. Untap that creature.

Flash Enchant creature Enchanted creature gets -4/-0.

Vigilance When Lumbering Battlement enters the battlefield, exile any number of other nontoken creatures you control until it leaves the battlefiel...

Prevent all combat damage that would be dealt this turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Destroy target artifact or enchantment. Scry 1.

Flying When Carrion Imp enters the battlefield, you may exile target creature card from a graveyard. If you do, you gain 2 life.

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.) Trample

Flying When Chillbringer enters the battlefield, tap target creature an opponent controls. It doesn't untap during its controller's next untap step.