Ikoria: Lair of Behemoths

Clash of Titans | Instant | | Target creature fights another target creature. (Each deals damage equal to its power to the other.) | Viktor Titov

Cloudpiercer | Creature | Dinosaur | Mutate {3}{R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Reach Whenever this creature mutates, you may discard a card. If you do, draw a card. | Dan Scott

Lukka, Coppercoat Outcast | Legendary Planeswalker | Lukka | +1: Exile the top three cards of your library. Creature cards exiled this way gain "You may cast this card from exile as long as you control a Lukka planeswalker." −2: Exile target creature you control, then reveal cards from the top of your library until you reveal a creature card with higher mana value. Put that card onto the battlefield and the rest on the bottom of your library in a random order. −7: Each creature you control deals damage equal to its power to each opponent. | Chris Rallis

Rooting Moloch | Creature | Lizard | When Rooting Moloch enters the battlefield, exile target card with a cycling ability from your graveyard. Until the end of your next turn, you may play that card. Cycling {2} ({2}, Discard this card: Draw a card.) | Andrey Kuzinskiy

Unpredictable Cyclone | Enchantment | | If a cycling ability of another nonland card would cause you to draw a card, instead exile cards from the top of your library until you exile a card that shares a card type with the cycled card. You may cast that card without paying its mana cost. Then put the exiled cards that weren't cast this way on the bottom of your library in a random order. Cycling {2} ({2}, Discard this card: Draw a card.) | Noah Bradley

Obosh, the Preypiercer | Legendary Creature | Hellion Horror | Companion — Your starting deck contains only cards with odd mana values and land cards. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) If a source you control with an odd mana value would deal damage to a permanent or player, it deals double that damage to that permanent or player instead. | Daarken

Quartzwood Crasher | Creature | Dinosaur Beast | Trample Whenever one or more creatures you control with trample deal combat damage to a player, create an X/X green Dinosaur Beast creature token with trample, where X is the amount of damage those creatures dealt to that player. | Antonio José Manzanedo

Jegantha, the Wellspring | Legendary Creature | Elemental Elk | Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) {T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs. | Chris Rahn

Offspring's Revenge | Enchantment | | At the beginning of combat on your turn, exile target red, white, or black creature card from your graveyard. Create a token that's a copy of that card, except it's 1/1. It gains haste until your next turn. | Daarken

Illuna, Apex of Wishes | Legendary Creature | Beast Elemental Dinosaur | Mutate {3}{R/G}{U}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flying, trample Whenever this creature mutates, exile cards from the top of your library until you exile a nonland permanent card. Put that card onto the battlefield or into your hand. | Chris Rahn