Throne of Eldraine

Fires of Invention | Enchantment | | You can cast spells only during your turn and you can cast no more than two spells each turn. You may cast spells with mana value less than or equal to the number of lands you control without paying their mana costs. | Stanton Feng

Irencrag Feat | Sorcery | | Add seven {R}. You can cast only one more spell this turn. | Yongjae Choi

Opportunistic Dragon | Creature | Dragon | Flying When Opportunistic Dragon enters the battlefield, choose target Human or artifact an opponent controls. For as long as Opportunistic Dragon remains on the battlefield, gain control of that permanent, it loses all abilities, and it can't attack or block. | Chris Rahn

Torbran, Thane of Red Fell | Legendary Creature | Dwarf Noble | If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead. | Grzegorz Rutkowski