Destroy all tapped creatures. Until your next turn, whenever a creature becomes tapped, destroy it.

Emerge
When Cresting Mosasaurus enters the battlefield, if you cast it, return each non-Dinosaur creature to its owner's hand.

Whenever Spitting Dilophosaurus enters the battlefield or attacks, put a -1/-1 counter on up to one target creature.
Creatures your opponents control with -1/-1 counters on them can't block.

First strike
Dinosaur spells you cast have prowl .

Whenever a nontoken creature with power 4 or greater enters the battlefield under your control, populate.

As an additional cost to cast this spell, sacrifice a creature with power 4 or greater.
Search your library for a Dinosaur creature card, put it onto the battlefield, then shuffle. It gains indestructible until your next turn.

(As this Saga enters and after your draw step, add a lore counter.)
For each opponent, up to one target noncreature artifact they control becomes a 0/4 Wall artifact creature with defender for as long as you control this Saga.
Create a 3/3 green Dinosaur creature token with trample. It gains haste until end of turn.
Destroy all Walls. Exile this Saga, then return it to the battlefield transformed under your control.

Partner with Owen Grady, Raptor Trainer
For each kind of counter on Blue, Loyal Raptor, each other Dinosaur you control enters the battlefield with a counter of that kind on it.

At the beginning of your end step, if a creature died this turn, create a tapped token that's a copy of Compy Swarm.

, Exile a creature card from your graveyard: Discover X, where X is the mana value of the exiled card. Activate only as a sorcery.

: Monstrosity 10. This ability costs less to activate for each creature with power 4 or greater your opponents control.
When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Gigantosaurus.

Henry Wu, InGen Geneticist and other Human creatures you control have exploit.
Whenever a creature you control exploits a non-Human creature, draw a card. If the exploited creature had power 3 or greater, create a Treasure token.

Whenever a player draws their second card each turn, that player exiles the top card of their library.
During each player's turn, that player may cast a spell from among the cards they don't own exiled with lan Malcolm, Chaotician, and mana of any type can be spent to cast it.

As Indominus Rex, Alpha enters the battlefield, discard any number of creature cards. It enters with a flying counter on it if a card discarded this way has flying. The same is true for first strike, double strike, deathtouch, hexproof, haste, indestructible, lifelink, menace, reach, trample, and vigilance.
When Indominus Rex enters the battlefield, draw a card for each counter on it.

Bloodthirst X (This creature enters the battlefield with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)
Menace
Enrage — Whenever Indoraptor, the Perfect Hybrid is dealt damage, choose an opponent at random. Indoraptor deals damage equal to its power to that player unless they sacrifice a nontoken creature.

Partner with Blue, Loyal Raptor
: Put your choice of a menace, trample, reach, or haste counter on target Dinosaur. Activate only as a sorcery.

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

Devour 3
Whenever Ravenous Tyrannosaurus attacks, it deals damage equal to its power to up to one other target creature. Excess damage is dealt to that creature's controller instead.

Flying, haste
Whenever Swooping Pteranodon or another Dinosaur with flying enters the battlefield under your control, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains flying and haste until end of turn. At the beginning of the next end step, target land deals 3 damage to that creature.

Imprint — , : Exile target creature card from a graveyard. Activate only as a sorcery.
: Create a token that's a copy of target creature card exiled with Dino DNA, except it's a 6/6 green Dinosaur creature with trample. Activate only as a sorcery.

: Add one mana of any color in your commander's color identity.

Destroy all tapped creatures. Until your next turn, whenever a creature becomes tapped, destroy it.

Emerge
When Cresting Mosasaurus enters the battlefield, if you cast it, return each non-Dinosaur creature to its owner's hand.

Whenever Spitting Dilophosaurus enters the battlefield or attacks, put a -1/-1 counter on up to one target creature.
Creatures your opponents control with -1/-1 counters on them can't block.

First strike
Dinosaur spells you cast have prowl .

Whenever a nontoken creature with power 4 or greater enters the battlefield under your control, populate.

As an additional cost to cast this spell, sacrifice a creature with power 4 or greater.
Search your library for a Dinosaur creature card, put it onto the battlefield, then shuffle. It gains indestructible until your next turn.

Partner with Owen Grady, Raptor Trainer
For each kind of counter on Blue, Loyal Raptor, each other Dinosaur you control enters the battlefield with a counter of that kind on it.

At the beginning of your end step, if a creature died this turn, create a tapped token that's a copy of Compy Swarm.

, Exile a creature card from your graveyard: Discover X, where X is the mana value of the exiled card. Activate only as a sorcery.

: Monstrosity 10. This ability costs less to activate for each creature with power 4 or greater your opponents control.
When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Gigantosaurus.

Henry Wu, InGen Geneticist and other Human creatures you control have exploit.
Whenever a creature you control exploits a non-Human creature, draw a card. If the exploited creature had power 3 or greater, create a Treasure token.

Whenever a player draws their second card each turn, that player exiles the top card of their library.
During each player's turn, that player may cast a spell from among the cards they don't own exiled with lan Malcolm, Chaotician, and mana of any type can be spent to cast it.

As Indominus Rex, Alpha enters the battlefield, discard any number of creature cards. It enters with a flying counter on it if a card discarded this way has flying. The same is true for first strike, double strike, deathtouch, hexproof, haste, indestructible, lifelink, menace, reach, trample, and vigilance.
When Indominus Rex enters the battlefield, draw a card for each counter on it.

Bloodthirst X (This creature enters the battlefield with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)
Menace
Enrage — Whenever Indoraptor, the Perfect Hybrid is dealt damage, choose an opponent at random. Indoraptor deals damage equal to its power to that player unless they sacrifice a nontoken creature.

Partner with Blue, Loyal Raptor
: Put your choice of a menace, trample, reach, or haste counter on target Dinosaur. Activate only as a sorcery.

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

Devour 3
Whenever Ravenous Tyrannosaurus attacks, it deals damage equal to its power to up to one other target creature. Excess damage is dealt to that creature's controller instead.

Flying, haste
Whenever Swooping Pteranodon or another Dinosaur with flying enters the battlefield under your control, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains flying and haste until end of turn. At the beginning of the next end step, target land deals 3 damage to that creature.

Imprint — , : Exile target creature card from a graveyard. Activate only as a sorcery.
: Create a token that's a copy of target creature card exiled with Dino DNA, except it's a 6/6 green Dinosaur creature with trample. Activate only as a sorcery.

, Sacrifice this artifact: Add one mana of any color.