Flash

When Vision Herald enters, the first spell target opponent casts during their next turn costs an additional {1} and 1 life to cast.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {B} instead.

Favored
Legendary permanents you control have haste and “Ward—Pay 3 life.”

Flying
When Kywon's Skyhunter enters the battlefield, draw a card.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Creatures you control with menace get +1/+0 until end of turn.

When Gravepact Wisdom enters the battlefield, reveal the top three cards of your library. Put one into your hand and the rest into your graveyard.
Whenever you cast a spell from your graveyard, each opponent loses 2 life and you gain 2 life.

Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard.

When Beastbond Instructor enters the battlefield, put a trample counter on target creature you control.

Reach, haste
Drop — When Beat Devastator enters the battlefield, if you didn't cast any creature spells during your last turn, Beat Devastator gains vigilance until end of turn. Up to one target creature blocks it this turn if able.

Flash
When Permafrost Tiger enters the battlefield, you may have it fight target creature that entered the battlefield this turn.

Barreling Bull can't be blocked by creatures with power 2 or less.
When Barreling Bull enters the battlefield, return a creature you control to its owner's hand.

Trample
As long as you're ancient, Old Ways Advocate and land creatures you control get +2/+2.

Waking Boneyard enters the battlefield tapped.
{T}: Add {W} or {B}.
{3}{W}{B}: Waking Boneyard becomes a white and black Elemental creature in addition to its other types until end of turn.
When Waking Boneyard dies, if it's a creature, create two 1/1 white Spirit creature tokens with flying.

Choose one —
• Target creature you control deals damage equal to its power to target creature or planeswalker you don't control.
• Destroy each artifact or enchantment with equal or lesser mana value than the greatest power among creatures you control.

Creatures you control get +1/+1 until end of turn.
Put a +1/+1 counter on each artifact creature you control.

Target creature you control gets +1/+0 and gains haste until end of turn.
Draw a card.

Destroy all creatures.

When Alrantan Visionary enters the battlefield, reveal the top three cards of your library. Put a noncreature permanent card from among them into your hand and the rest into your graveyard.
{T}: Add one mana of any color.
Wander {4}{G}{G}

When Brass Baker enters the battlefield, create a Food token.

Flying, deathtouch, haste

When Thornlasher Mortis enters the battlefield, mill two cards.
Whenever one or more cards leave your graveyard, create a 1/1 green Saproling creature token. This ability triggers only once each turn.

At the beginning of combat on your turn, up to one target creature you control has base power and toughness X/X until end of turn, where X is the number of enchantments you control.
When Lykaretos dies, bless target land.

When Grovelit Meditation enters the battlefield, you gain 4 life.
{1}{G}, Sacrifice Grovelit Meditation: Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Untap target creature and gain control of it until end of turn. That creature gains haste until end of turn.