Dominaria

Krosan Druid | Creature | Centaur Druid | Kicker {4}{G} (You may pay an additional {4}{G} as you cast this spell.) When Krosan Druid enters the battlefield, if it was kicked, you gain 10 life. | Bastien L. Deharme

Llanowar Envoy | Creature | Elf Scout | {1}{G}: Add one mana of any color. | Daniel Ljunggren

Marwyn, the Nurturer | Legendary Creature | Elf Druid | Whenever another Elf enters the battlefield under your control, put a +1/+1 counter on Marwyn, the Nurturer. {T}: Add an amount of {G} equal to Marwyn's power. | Chris Rahn

Steel Leaf Champion | Creature | Elf Knight | Steel Leaf Champion can't be blocked by creatures with power 2 or less. | Chris Rahn

Yavimaya Sapherd | Creature | Fungus | When Yavimaya Sapherd enters the battlefield, create a 1/1 green Saproling creature token. | Christine Choi

Slimefoot, the Stowaway | Legendary Creature | Fungus | Whenever a Saproling you control dies, Slimefoot, the Stowaway deals 1 damage to each opponent and you gain 1 life. {4}: Create a 1/1 green Saproling creature token. | Alex Konstad

Hallar, the Firefletcher | Legendary Creature | Elf Archer | Trample Whenever you cast a spell, if that spell was kicked, put a +1/+1 counter on Hallar, the Firefletcher, then Hallar deals damage equal to the number of +1/+1 counters on it to each opponent. | Bram Sels