Core Set 2020

Chandra's Embercat | Creature | Elemental Cat | {T}: Add {R}. Spend this mana only to cast an Elemental spell or a Chandra planeswalker spell. | Johan Grenier

Ember Hauler | Creature | Goblin | {1}, Sacrifice Ember Hauler: It deals 2 damage to any target. | Steve Prescott

Goblin Bird-Grabber | Creature | Goblin | {R}: Goblin Bird-Grabber gains flying until end of turn. Activate only if you control a creature with flying. | Anna Podedworna

Marauding Raptor | Creature | Dinosaur | Creature spells you cast cost {1} less to cast. Whenever another creature enters the battlefield under your control, Marauding Raptor deals 2 damage to it. If a Dinosaur is dealt damage this way, Marauding Raptor gets +2/+0 until end of turn. | Bayard Wu

Pack Mastiff | Creature | Dog | {1}{R}: Each creature you control named Pack Mastiff gets +1/+0 until end of turn. | Svetlin Velinov

Thunderkin Awakener | Creature | Elemental Shaman | Haste Whenever Thunderkin Awakener attacks, choose target Elemental creature card in your graveyard with toughness less than Thunderkin Awakener's toughness. Return that card to the battlefield tapped and attacking. Sacrifice it at the beginning of the next end step. | Yongjae Choi

Unchained Berserker | Creature | Human Berserker | Protection from white (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything white.) Unchained Berserker gets +2/+0 as long as it's attacking. | Bram Sels

Skyknight Vanguard | Creature | Human Knight | Flying Whenever Skyknight Vanguard attacks, create a 1/1 white Soldier creature token that's tapped and attacking. | Bayard Wu

Lightning Stormkin | Creature | Elemental Wizard | Flying Haste (This creature can attack and {T} as soon as it comes under your control.) | Rudy Siswanto

Creeping Trailblazer | Creature | Elemental | Other Elementals you control get +1/+0. {2}{R}{G}: Creeping Trailblazer gets +1/+1 until end of turn for each Elemental you control. | Johan Grenier