This spell can't be countered.
Green spells you control can't be countered.
: Until end of turn, each Elf creature you control has base power and toughness 5/5 and becomes a Dinosaur in addition to its other creature types.

Mikaeus, the Lunarch enters with X +1/+1 counters on it.
: Put a +1/+1 counter on Mikaeus.
, Remove a +1/+1 counter from Mikaeus: Put a +1/+1 counter on each other creature you control.

At the beginning of each end step, if an opponent discarded a card this turn, you draw a card and you lose 1 life.
: Each opponent with no cards in hand loses 10 life.

Flying, first strike
Whenever Drana, Liberator of Malakir deals combat damage to a player, put a +1/+1 counter on each attacking creature you control.

If an opponent would mill one or more cards, they mill twice that many cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)

Whenever another creature enters, its controller may draw a card if its power is greater than each other creature's power.
, : Add X mana in any combination of colors, where X is the greatest power among creatures you control.

Flying
Activated abilities of creatures your opponents control can't be activated.

: Exile another target creature you control, then return it to the battlefield under its owner's control.
Whenever another creature you control enters, you may pay . If you do, put a +1/+1 counter on it. If it's a Unicorn, put two +1/+1 counters on it instead. ( can be paid with either or .)

, , Sacrifice another creature: Create X 2/2 black Zombie creature tokens, where X is the sacrificed creature's power.

Flying
Whenever Maelstrom Archangel deals combat damage to a player, you may cast a spell from your hand without paying its mana cost.

Reach
Ulvenwald Hydra's power and toughness are each equal to the number of lands you control.
When Ulvenwald Hydra enters, you may search your library for a land card, put it onto the battlefield tapped, then shuffle.

Towering Titan 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.

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.

Haste
When Craterhoof Behemoth 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.