Rivaux d'Ixalan

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has three or more +1/+1 counters...

When Forerunner of the Heralds enters the battlefield, you may search your library for a Merfolk card, reveal it, then shuffle your library and put...

Vigilance, reach, trample When Zacama, Primal Calamity enters the battlefield, if you cast it, untap all lands you control. {2}{R}: Zacama deals 3 ...

Dinosaur spells you cast cost {2} less to cast.

When Jade Bearer enters the battlefield, put a +1/+1 counter on another target Merfolk you control.

Enrage — Whenever Cacophodon is dealt damage, untap target permanent.

Enrage — Whenever Siegehorn Ceratops is dealt damage, put two +1/+1 counters on it. (It must survive the damage to get the counters.)

Other Merfolk you control get +1/+1.

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 ...

{T}: Add one mana of any color. Sacrifice Atzocan Seer: Return target Dinosaur card from your graveyard to your hand.

Whenever Raging Regisaur attacks, it deals 1 damage to any target.

Destroy target artifact or enchantment.

When Forerunner of the Heralds enters the battlefield, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on...

Enrage — Whenever Overgrown Armasaur is dealt damage, create a 1/1 green Saproling creature token.

{1}, Sacrifice Thrashing Brontodon: Destroy target artifact or enchantment.

Flash When Swift Warden enters the battlefield, target Merfolk you control gains hexproof until end of turn. (It can't be the target of spells or a...

Destroy target artifact or enchantment.

Giltgrove Stalker can't be blocked by creatures with power 2 or less.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

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 po...

Whenever another Merfolk enters the battlefield under your control, put a +1/+1 counter on target Merfolk you control.

When Jadecraft Artisan enters the battlefield, target creature gets +2/+2 until end of turn.

When Cherished Hatchling dies, you may cast Dinosaur spells this turn as though they had flash, and whenever you cast a Dinosaur spell this turn, i...

Put two +1/+1 counters on each creature you control.