Unlikely Aid

Target creature gets +2/+0 and gains indestructible until end of turn. (Damage and effects that say “destroy” don’t destroy it.)

Narset’s Reversal

Copy target instant or sorcery spell, then return it to its owner’s hand. You may choose new targets for the copy.

Dagger Caster

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

Rakdos, the Showstopper

Flying, trample
When Rakdos, the Showstopper enters the battlefield, flip a coin for each creature that isn’t a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.

Syndicate Messenger

Flying
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

Rakdos, the Showstopper

Flying, trample
When Rakdos, the Showstopper enters the battlefield, flip a coin for each creature that isn’t a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.

Soulblade Djinn

Flying
Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn.

Goblin Banneret

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Goblin Banneret gets +2/+0 until end of turn.

Silverbeak Griffin

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

Havoc Devils

Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Tidespout Tyrant

Flying
Whenever you cast a spell, return target permanent to its owner’s hand.

Battle Mastery

Enchant creature
Enchanted creature has double strike. (It deals both first-strike and regular combat damage.)

Karplusan Hound

Whenever Karplusan Hound attacks, if you control a Chandra planeswalker, this creature deals 2 damage to any target.

Verdant Force

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

Verdant Force

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

Excavation Elephant

Kicker (You may pay an additional as you cast this spell.)
When Excavation Elephant enters the battlefield, if it was kicked, return target artifact card from your graveyard to your hand.

Swift Warden

Flash
When Swift Warden enters the battlefield, target Merfolk you control gains hexproof until end of turn. (It can’t be the target of spells or abilities your opponents control.)

Elusive Spellfist

Whenever you cast a noncreature spell, Elusive Spellfist gets +1/+0 until end of turn and can’t be blocked this turn.

Imperial Lancer

Imperial Lancer has double strike as long as you control a Dinosaur.

Glorifier of Dusk

Pay 2 life: Glorifier of Dusk gains flying until end of turn.
Pay 2 life: Glorifier of Dusk gains vigilance until end of turn.

Bloodwater Entity

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Bloodwater Entity enters the battlefield, you may put target instant or sorcery card from your graveyard on top of your library.