Incorrigible Youths

Haste (This creature can attack and as soon as it comes under your control.)
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Lightwalker

Lightwalker has flying as long as it has a +1/+1 counter on it.

Join Shields

Untap all creatures you control. They gain hexproof and indestructible until end of turn. (They can’t be the targets of spells or abilities your opponents control. Damage and effects that say “destroy” don’t destroy them.)

Bladebrand

Target creature gains deathtouch until end of turn.
Draw a card.

Migratory Route

Create four 1/1 white Bird creature tokens with flying.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Fervent Strike

Target creature gets +1/+0 and gains first strike and haste until end of turn.

Acrobatic Maneuver

Exile target creature you control, then return that card to the battlefield under its owner’s control.
Draw a card.

Enthralling Victor

When Enthralling Victor enters, gain control of target creature an opponent controls with power 2 or less until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Call the Scions

Devoid (This card has no color.)
Create two 1/1 colorless Eldrazi Scion creature tokens. They have “Sacrifice this creature: Add .”

Brilliant Spectrum

Converge — Draw X cards, where X is the number of colors of mana spent to cast this spell. Then discard two cards.

Skymarcher Aspirant

Ascend (If you control ten or more permanents, you get the city’s blessing for the rest of the game.)
Skymarcher Aspirant has flying as long as you have the city’s blessing.

River Darter

River Darter can’t be blocked by Dinosaurs.

Queen’s Agent

Lifelink
When Queen’s Agent enters, it explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Chittering Witch

When Chittering Witch enters, create a number of 1/1 black Rat creature tokens equal to the number of opponents you have.
, Sacrifice a creature: Target creature gets -2/-2 until end of turn.

Bladebrand

Target creature gains deathtouch until end of turn.
Draw a card.

Mother Bear

, Exile Mother Bear from your graveyard: Create two 2/2 green Bear creature tokens. Activate only as a sorcery.

Cordial Vampire

Whenever Cordial Vampire or another creature dies, put a +1/+1 counter on each Vampire you control.

Saddled Rimestag

Saddled Rimestag gets +2/+2 as long as you had another creature enter the battlefield under your control this turn.