Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Acidic Slime enters, destroy target artifact, enchantment, or land.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

+1: You gain 2 life.

−1: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.

−6: Create a white Avatar creature token. It has "This creature's power and toughness are each equal to your life total."

You gain 7 life.

Enchant creature

Enchanted creature gets +1/+1 for each Plains you control and has flying.

When Awakener Druid enters, target Forest becomes a 4/5 green Treefolk creature for as long as Awakener Druid remains on the battlefield. It's still a land.

Flying, first strike, lifelink, protection from Demons and from Dragons

Flying

: Add one mana of any color.

, : Tap target creature.

Flash

Flying

When Bogardan Hellkite enters, it deals 5 damage divided as you choose among any number of targets.

You gain 1 life for each land you control.

Each player draws three cards, then discards three cards at random.

Counter target spell.

At the beginning of your upkeep, choose target nonland permanent you control and up to two target nonland permanents you don't control. Destroy one of them at random.

Exile target black or red permanent.

Lifelink

Spend only black mana on X.

Consume Spirit deals X damage to any target and you gain X life.

: Regenerate Cudgel Troll. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Destroy target green or white creature.

Return target creature card from your graveyard to your hand.

Draw two cards.

Flying

Djinn of Wishes enters with three wish counters on it.

, Remove a wish counter from Djinn of Wishes: Reveal the top card of your library. You may play that card without paying its mana cost. If you don't, exile it.

Flying

: Dragon Whelp gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Dragon Whelp at the beginning of the next end step.

: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Earthquake deals X damage to each creature without flying and each player.

Other Elf creatures you control get +1/+1.

: Add for each Elf you control.

When Elvish Visionary enters, draw a card.

Counter target creature spell.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

This spell costs more to cast for each target beyond the first.

Fireball deals X damage divided evenly, rounded down, among any number of targets.

Counter target red or green spell.

+1: Untap two target lands.

−1: Create a 3/3 green Beast creature token.

−4: Creatures you control get +3/+3 and gain trample until end of turn.

Reach (This creature can block creatures with flying.)

: Goblin Artillery deals 2 damage to any target and 3 damage to you.

This spell can't be countered.

Protection from blue and from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue or black.)

Flying

If a source an opponent controls would deal damage to you, prevent 1 of that damage.

Exile all cards from target player's graveyard other than basic land cards. For each card exiled this way, search that player's library for all cards with the same name as that card and exile them. Then that player shuffles.

Enchant creature

Enchanted creature gets +1/+2.

Flying

When Howling Banshee enters, each player loses 3 life.

Enchant creature

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

When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.

Flying

When Illusionary Servant becomes the target of a spell or ability, sacrifice it.

Whenever Inferno Elemental blocks or becomes blocked by a creature, Inferno Elemental deals 3 damage to that creature.

Jackal Familiar can't attack or block alone.

Shroud (This creature can't be the target of spells or abilities.)

Target creature gets +1/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)