
Ambling Stormshell | Creature | Turtle | Ward {2}
Whenever this creature attacks, put three stun counters on it and draw three cards. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Whenever you cast a Turtle spell, untap this creature. | Carlos Palma Cruchaga

Constrictor Sage | Creature | Snake Wizard | When this creature enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Renew — {2}{U}, Exile this card from your graveyard: Tap target creature an opponent controls and put a stun counter on it. Activate only as a sorcery. | Nereida

Iceridge Serpent | Creature | Serpent | When this creature enters, return target creature an opponent controls to its owner's hand. | Brian Valeza

Whirlwing Stormbrood | Creature | Dragon | Flash
Flying
You may cast sorcery spells and Dragon spells as though they had flash. | Fajareka Setiawan

Iridescent Tiger | Creature | Cat | When this creature enters, if you cast it, add {W}{U}{B}{R}{G}. | Fajareka Setiawan

Jeskai Shrinekeeper | Creature | Dragon | Flying, haste
Whenever this creature deals combat damage to a player, you gain 1 life and draw a card. | Andrew Mar

Shiko, Paragon of the Way | Legendary Creature | Spirit Dragon | Flying, vigilance
When Shiko enters, exile target nonland card with mana value 3 or less from your graveyard. Copy it, then you may cast the copy without paying its mana cost. (A copy of a permanent spell becomes a token.) | Victor Adame Minguez

Lotuslight Dancers | Creature | Zombie Bard | Lifelink
When this creature enters, search your library for a black card, a green card, and a blue card. Put those cards into your graveyard, then shuffle. | Jodie Muir

Teval, Arbiter of Virtue | Legendary Creature | Spirit Dragon | Flying, lifelink
Spells you cast have delve. (Each card you exile from your graveyard while casting those spells pays for {1}.)
Whenever you cast a spell, you lose life equal to its mana value. | Alexander Ostrowski