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

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

Maniacal Rage | Enchantment | Aura | Enchant creature Enchanted creature gets +2/+2 and can't block. | Heonhwa Choe

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