This creature enters with X +1/+1 counters on it, where X is the total toughness of other creatures you control.
Sacrifice a creature with defender: All creatures gain trample until end of turn.

Immolating Gyre deals X damage to each creature and planeswalker you don't control, where X is the number of instant and sorcery cards in your graveyard.

Whenever you cast a creature spell, create a 3/3 green Beast creature token.
Whenever you cast a noncreature spell, put three +1/+1 counters on target creature you control.
Landfall — Whenever a land you control enters, you gain 3 life.

Flying
If you would draw a card while your library has no cards in it, instead put five +1/+1 counters on Ormos.
, Discard three cards with different names: Draw five cards.

When this creature enters, return target permanent to its owner's hand, then that player discards a card.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever another nontoken creature dies, you may draw a card.

Enchant creature
When this Aura enters, it deals 2 damage to any target.
Enchanted creature gets +2/+2.

Flying
Whenever another nontoken Dragon you control enters, create a 5/5 red Dragon creature token with flying.
: Dragons you control get +1/+0 until end of turn.

Vigilance (Attacking doesn't cause this creature to tap.)

Flying
When this creature enters, create a 1/1 white Human creature token.

Trample
Whenever another nontoken creature you control enters, you may draw a card.

When Lena enters, create a 1/1 white Soldier creature token for each nontoken creature you control.
Sacrifice Lena: Creatures you control with power less than Lena's power gain indestructible until end of turn.

When this creature enters, you draw a card and you lose 1 life.

Flying (This creature can't be blocked except by creatures with flying or reach.)
: Return target creature card from your graveyard to the battlefield tapped.

Whenever another creature enters, you may put X +1/+1 counters on this creature, where X is that creature's power.

Flying
When this creature enters, you may cast target instant, sorcery, or artifact card from your graveyard without paying its mana cost. If an instant or sorcery spell cast this way would be put into your graveyard, exile it instead.

Trample
Whenever this creature attacks, it gets +1/+1 until end of turn for each land you control.

Defender
: This creature gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender.

Other Dinosaurs you control get +1/+1.
: Create a 3/3 green Dinosaur creature token with trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)

When this creature enters, destroy target nonland permanent an opponent controls.

Flash
Flying
When this creature enters, if you cast it from your hand, exile all attacking creatures.

Flying
Whenever a creature with flying attacks, you may draw a card.

This spell costs less to cast for each instant and sorcery card in your graveyard.

Flying
Each opponent who cast a spell this turn can't attack with creatures.
Each opponent who attacked with a creature this turn can't cast spells.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.
At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.

Flying
You may cast this creature from your graveyard by paying and sacrificing two creatures rather than paying its mana cost.

Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.

Put all creature cards from all graveyards onto the battlefield under your control.

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)