Rivals of Ixalan

This spell costs {X} less to cast, where X is the total power of creatures you control. Trample

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

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

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

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...

Destroy target artifact or enchantment.

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

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

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...

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 ...

Other Merfolk you control get +1/+1.

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

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

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...

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

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

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 cou...

When Jungleborn Pioneer enters the battlefield, create a 1/1 blue Merfolk creature token with hexproof. (It can't be the target of spells or abilit...

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...

{3}{B}{G}: Return Jungle Creeper from your graveyard to your hand.

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...

Trample When Crested Herdcaller enters the battlefield, create a 3/3 green Dinosaur creature token with trample.

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