Search your library for up to three creature cards, put them into your graveyard, then shuffle.

This land enters tapped unless you control two or more other lands.
: Add or .

Each creature you control gets +1/+0 for each time it has attacked this turn.
Landfall — Whenever a land you control enters, if it's your main phase, there's an additional combat phase after this phase. At the beginning of that combat, untap all creatures you control.

Create five 1/1 white Human creature tokens. If this spell was cast from a graveyard, create ten of those tokens instead.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

At the beginning of your upkeep, put a plague counter on this artifact.
: Put a plague counter on this artifact or remove a plague counter from it.
When this artifact has three or more plague counters on it, sacrifice it. If you do, destroy all nonland permanents.

Each creature you control gets +1/+0 for each time it has attacked this turn.
Landfall — Whenever a land you control enters, if it's your main phase, there's an additional combat phase after this phase. At the beginning of that combat, untap all creatures you control.

Warpath deals 3 damage to each blocking creature and each blocked creature.

, Discard a card: Exile target card from a graveyard.
, Sacrifice this enchantment: Exile target card from a graveyard.

Double strike
Éomer enters with a +1/+1 counter on it for each other Human you control.
When Éomer enters, target player becomes the monarch. Éomer deals damage equal to its power to any target.

Surveil 2, then draw a card. You may planeswalk. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn.

Destroy target artifact or enchantment.

When this creature enters, you may return target artifact card from your graveyard to your hand.

: Untap another target permanent.

Lands you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)
: Return target land card from your graveyard to your hand.

Whenever a creature you control deals combat damage to a player, you may draw a card.
Cycling (, Discard this card: Draw a card.)

You don't lose unspent green mana as steps and phases end.
Omnath gets +1/+1 for each unspent green mana you have.

If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

Champion a Goblin (When this enters, sacrifice it unless you exile another Goblin you control. When this leaves the battlefield, that card returns to the battlefield.)
Whenever a Goblin you control deals combat damage to a player, you may create a 1/1 black Goblin Rogue creature token.

Create X 1/1 black Rat creature tokens with "This token can't block." Creatures you control gain haste until end of turn.