Rivals of Ixalan

Enter the Unknown | Sorcery | | Target creature you control explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.) You may play an additional land this turn. | Howard Lyon

Hunt the Weak | Sorcery | | Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.) | Mathias Kollros

Strength of the Pack | Sorcery | | Put two +1/+1 counters on each creature you control. | Tomasz Jedruszek

Thunderherd Migration | Sorcery | | As an additional cost to cast this spell, reveal a Dinosaur card from your hand or pay {1}. Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. | Lars Grant-West