At the beginning of your upkeep, you gain 1 life.

When Ranger of Eos enters the battlefield, you may search your library for up to two creature cards with converted mana cost 1 or less, reveal them, and put them into your hand. If you do, shuffle your library.

Whenever you cast an enchantment spell, create a 4/4 white Angel creature token with flying.

First strike
Noncreature spells cost more to cast.

Other Merfolk creatures you control get +1/+1.
Whenever you cast a Merfolk spell, you may tap or untap target permanent.

Whenever you cast a spell, proliferate.

When Brain Maggot enters the battlefield, target opponent reveals their hand and you choose a nonland card from it. Exile that card until Brain Maggot leaves the battlefield.

Pack Rat's power and toughness are each equal to the number of Rats you control.
, Discard a card: Create a token that's a copy of Pack Rat.

Creature tokens get -2/-2.

Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token.
Whenever an opponent discards a land card, add .
Whenever an opponent discards a noncreature, nonland card, draw a card.

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

Kicker
Haste
When Goblin Ruinblaster enters the battlefield, if it was kicked, destroy target nonbasic land.

Enchant creature
Enchanted creature gets +2/+2 for each other enchantment on the battlefield.

Trample
Terravore's power and toughness are each equal to the number of land cards in all graveyards.

Knight of the Reliquary gets +1/+1 for each land card in your graveyard.
, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle your library.

Destroy target nonland permanent and all other permanents with the same name as that permanent.

As Meddling Mage enters the battlefield, choose a nonland card name.
Spells with the chosen name can't be cast.

Flying
You can't lose the game and your opponents can't win the game.

Barren Moor enters the battlefield tapped.
: Add .
Cycling

Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile all cards from target player's graveyard.
: Add .

Forgotten Cave enters the battlefield tapped.
: Add .
Cycling

: Add .
, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle their library.

Lonely Sandbar enters the battlefield tapped.
: Add .
Cycling

Secluded Steppe enters the battlefield tapped.
: Add .
Cycling

Tranquil Thicket enters the battlefield tapped.
: Add .
Cycling