Ixalan

Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

This creature can't be blocked. Whenever another Merfolk you control enters, this creature gets +1/+1 until end of turn.

Return all nonland permanents target player controls to their owner's hand.

This land enters tapped unless you control a Mountain or a Forest. T: Add R or G.

Trample When this creature enters, draw three cards, then discard two cards at random. If two cards that share a card type are discarded this way, put two +1/+1 counters on this creature.

Raid — At the beginning of your end step, if you attacked this turn, reveal the top card of your library and put that card into your hand. You lose life equal to the card's mana value.

T, Discard a card: Draw a card.

Put target artifact or creature on top of its owner's library.

2B, Sacrifice a creature: Create two Treasure tokens. (They're artifacts with "T, Sacrifice this token: Add one mana of any color.") Sacrifice three Treasures: Draw a card.

When this creature enters, create a Treasure token. (It's an artifact with "T, Sacrifice this token: Add one mana of any color.")

Whenever a Vampire you control attacks, each opponent loses 1 life and you gain 1 life.

You gain twice X life. Put Sanguine Sacrament on the bottom of its owner's library.

This spell costs 2 less to cast if it targets a Dinosaur you control. 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.)

At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Search for Azcanta. (Look at the top card of your library. You may put that card into your graveyard.)

When this creature enters, it 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 this creature, then put the card back or put it into your graveyard.)

When this artifact enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) T, Exile this artifact: Exile all graveyards.

Exile all attacking creatures target player controls. That player may search their library for that many basic land cards, put those cards onto the battlefield tapped, then shuffle.

Whenever a creature you control explores, put a +1/+1 counter on this Vehicle. Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

This creature has flying as long as you control another Merfolk.

3G: Put a +1/+1 counter on target creature. 2U, Remove a +1/+1 counter from a creature you control: Draw a card.

Whenever a creature you control becomes the target of a spell or ability an opponent controls, you may draw a card.

Target creature gains indestructible until end of turn. Scry 1. (Damage and effects that say "destroy" don't destroy the creature.)

Flying

Raid — When this creature enters, if you attacked this turn, you may draw a card. If you do, discard a card.