Dominaria

Fight with Fire | Sorcery | | Kicker {5}{R} (You may pay an additional {5}{R} as you cast this spell.) Fight with Fire deals 5 damage to target creature. If this spell was kicked, it deals 10 damage divided as you choose among any number of targets instead. (Those targets can include players and planeswalkers.) | Yongjae Choi

Goblin Warchief | Creature | Goblin Warrior | Goblin spells you cast cost {1} less to cast. Goblins you control have haste. | Karl Kopinski

Valduk, Keeper of the Flame | Legendary Creature | Human Shaman | At the beginning of combat on your turn, for each Aura and Equipment attached to Valduk, Keeper of the Flame, create a 3/1 red Elemental creature token with trample and haste. Exile those tokens at the beginning of the next end step. | Victor Adame Minguez

Wizard's Lightning | Instant | | This spell costs {2} less to cast if you control a Wizard. Wizard's Lightning deals 3 damage to any target. | Grzegorz Rutkowski

Adeliz, the Cinder Wind | Legendary Creature | Human Wizard | Flying, haste Whenever you cast an instant or sorcery spell, Wizards you control get +1/+1 until end of turn. | Zezhou Chen

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