The Lost Caverns of Ixalan

Marauding Brinefang | Creature | Dinosaur | Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.) | John Tedrick

Bringer of the Last Gift | Creature | Vampire Demon | Flying When Bringer of the Last Gift enters the battlefield, if you cast it, each player sacrifices all other creatures they control. Then each player returns all creature cards from their graveyard that weren't put there this way to the battlefield. | Wero Gallo

Gargantuan Leech | Creature | Leech | This spell costs {1} less to cast for each Cave you control and each Cave card in your graveyard. Lifelink | Piotr Foksowicz

Hit the Mother Lode | Sorcery | | Discover 10. If the discovered card's mana value is less than 10, create a number of tapped Treasure tokens equal to the difference. (To discover 10, exile cards from the top of your library until you exile a nonland card with mana value 10 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.) | Diego Gisbert

Ghalta, Stampede Tyrant | Legendary Creature | Elder Dinosaur | Trample When Ghalta, Stampede Tyrant enters the battlefield, put any number of creature cards from your hand onto the battlefield. | Lars Grant-West

Nurturing Bristleback | Creature | Dinosaur | When Nurturing Bristleback enters the battlefield, create a 3/3 green Dinosaur creature token. Forestcycling {2} ({2}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.) | John Tedrick

The Skullspore Nexus | Legendary Artifact | | This spell costs {X} less to cast, where X is the greatest power among creatures you control. Whenever one or more nontoken creatures you control die, create a green Fungus Dinosaur creature token with base power and toughness each equal to the total power of those creatures. {2}, {T}: Double target creature's power until end of turn. | Daarken

Gishath, Sun's Avatar | Legendary Creature | Dinosaur Avatar | Vigilance, trample, haste Whenever Gishath, Sun's Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order. | Zack Stella

Threefold Thunderhulk | Artifact Creature | Gnome | Threefold Thunderhulk enters the battlefield with three +1/+1 counters on it. Whenever Threefold Thunderhulk enters the battlefield or attacks, create a number of 1/1 colorless Gnome artifact creature tokens equal to its power. {2}, Sacrifice another artifact: Put a +1/+1 counter on Threefold Thunderhulk. | Xavier Ribeiro