: This creature deals 1 damage to each creature without flying and each player. Any player may activate this ability.

Counter target spell.
Draw a card.

Warleader's Helix deals 4 damage to any target and you gain 4 life.

Creature spells can't be cast.
Pay 4 life: Destroy this enchantment. It can't be regenerated. Any player may activate this ability.

Spells your opponents cast that target a creature or planeswalker you control cost more to cast.
−2: Create a 2/2 blue Wizard creature token. Draw a card, then discard a card.

During your turn, commanders you control have indestructible. (Effects that say "destroy" don't destroy them. A creature with indestructible can't be destroyed by damage.)
Partner (You can have two commanders if both have partner.)

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, other creatures you control get +X/+X until end of turn, where X is the number of times this creature has mutated.

As this enchantment enters, choose a color.
Whenever a player casts a spell of the chosen color, that player loses 1 life.

Flying
As long as this card is in your graveyard and you control an Island, creatures you control have flying.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Target player loses 2 life and you gain 2 life.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

This creature attacks each combat if able.
This creature can't be blocked by Walls.

Target player reveals their hand, then you choose a card other than a basic land card from it. Search that player's graveyard, hand, and library for all cards with the same name as the chosen card and exile them. Then that player shuffles.

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.

Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, destroy target land.

When this creature enters, it deals 2 damage to target opponent and 2 damage to up to one target creature or planeswalker.

Destroy target artifact, enchantment, or land.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Shroud (This creature can't be the target of spells or abilities.)
Vanishing 4 (This creature enters with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Forked Lightning deals 4 damage divided as you choose among one, two, or three target creatures.

If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.
−2: Jaya deals 2 damage to any target.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When this creature enters, destroy target artifact, enchantment, or land.

Trample
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When this creature enters, you may destroy target artifact or enchantment.

Haste (This creature can attack and as soon as it comes under your control.)
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Flying, first strike, vigilance

Gain control of target creature. Untap that creature. It gains haste until end of turn. Sacrifice it at the beginning of the next end step.

Changeling (This card is every creature type.)
You may have Moritte enter as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

Flying
When this creature enters, draw two cards.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

First strike
: Add an amount of equal to the greatest power among creatures you control that entered this turn.
Partner (You can have two commanders if both have partner.)

Whenever an opponent draws a card, Ob Nixilis deals 1 damage to that player.
−2: Destroy target creature. Its controller draws two cards.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Bituminous Blast deals 4 damage to target creature.

Flying, lifelink
Whenever you cast your second spell each turn, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

As long as this creature is enchanted, it gets +2/+2 and has flying, first strike, and trample.

Put target creature card from a graveyard onto the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.