Rivals of Ixalan

Dire Fleet Daredevil | Creature | Human Pirate | First strike When Dire Fleet Daredevil enters the battlefield, exile target instant or sorcery card from an opponent's graveyard. You may cast it this turn, and you may spend mana as though it were mana of any type to cast that spell. If that spell would be put into a graveyard this turn, exile it instead. | Zoltan Boros

Etali, Primal Storm | Legendary Creature | Elder Dinosaur | Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs. | Raymond Swanland

Silverclad Ferocidons | Creature | Dinosaur | Enrage — Whenever Silverclad Ferocidons is dealt damage, each opponent sacrifices a permanent. | Simon Dominic

Tilonalli's Summoner | Creature | Human Shaman | Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) Whenever Tilonalli's Summoner attacks, you may pay {X}{R}. If you do, create X 1/1 red Elemental creature tokens that are tapped and attacking. At the beginning of the next end step, exile those tokens unless you have the city's blessing. | Lius Lasahido

Protean Raider | Creature | Shapeshifter Pirate | Raid — If you attacked this turn, you may have Protean Raider enter the battlefield as a copy of any creature on the battlefield. | Izzy