Generator Servant

{T}, Sacrifice this creature: Add {C}{C}. If that mana is spent on a creature spell, it gains haste until end of turn. (That creature can attack and {T} as soon as it comes under your control.)

Lavakin Brawler

Whenever this creature attacks, it gets +1/+0 until end of turn for each Elemental you control.

Masked Vandal

Changeling (This card is every creature type.)
When this creature enters, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

Spitebellows

When this creature leaves the battlefield, it deals 6 damage to target creature.
Evoke {1}{R}{R} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Chandra's Embercat

{T}: Add {R}. Spend this mana only to cast an Elemental spell or a Chandra planeswalker spell.

Creeping Trailblazer

Other Elementals you control get +1/+0.
{2}{R}{G}: This creature gets +1/+1 until end of turn for each Elemental you control.

Bloodpyre Elemental

Sacrifice this creature: It deals 4 damage to target creature. Activate only as a sorcery.

Humbler of Mortals

Constellation — Whenever this creature or another enchantment you control enters, creatures you control gain trample until end of turn.

Igneous Elemental

This spell costs {2} less to cast if there is a land card in your graveyard.
When this creature enters, you may have it deal 2 damage to target creature.

Cinder Pyromancer

{T}: This creature deals 1 damage to target player or planeswalker.
Whenever you cast a red spell, you may untap this creature.

Smokebraider

{T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals.

Living Lightning

When this creature dies, return target instant or sorcery card from your graveyard to your hand.

Inner-Flame Igniter

{2}{R}: Creatures you control get +1/+0 until end of turn. If this is the third time this ability has resolved this turn, creatures you control gain first strike until end of turn.

Brighthearth Banneret

Elemental spells and Warrior spells you cast cost {1} less to cast.
Reinforce 1—{1}{R} ({1}{R}, Discard this card: Put a +1/+1 counter on target creature.)

Blanchwood Prowler

When this creature enters, mill three cards. You may put a land card from among the cards milled this way into your hand. If you don't, put a +1/+1 counter on this creature. (To mill a card, put the top card of your library into your graveyard.)

Granitic Titan

Menace
Cycling {2} ({2}, Discard this card: Draw a card.)

Forest

Leafkin Druid

{T}: Add {G}. If you control four or more creatures, add {G}{G} instead.

Soulbright Flamekin

{2}: Target creature gains trample until end of turn. If this is the third time this ability has resolved this turn, you may add {R}{R}{R}{R}{R}{R}{R}{R}.

Stingmoggie

This creature enters with two +1/+1 counters on it.
{3}{R}, Remove a +1/+1 counter from this creature: Destroy target artifact or land.

Ivy Elemental

This creature enters with X +1/+1 counters on it.

Fertilid

This creature enters with two +1/+1 counters on it.
{1}{G}, Remove a +1/+1 counter from this creature: Target player searches their library for a basic land card, puts it onto the battlefield tapped, then shuffles.

Sunflare Shaman

{1}{R}, {T}: This creature deals X damage to any target and X damage to itself, where X is the number of Elemental cards in your graveyard.

Path of Ancestry

This land enters tapped.
{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Catalyst Elemental

Grinning Ignus

{R}, Return this creature to its owner's hand: Add {C}{C}{R}. Activate only as a sorcery.

Webweaver Changeling

Changeling (This card is every creature type.)
Reach
When this creature enters, if there are three or more creature cards in your graveyard, you gain 5 life.

Ingot Chewer

When this creature enters, destroy target artifact.
Evoke {R} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Roar of the Crowd

Choose a creature type. Roar of the Crowd deals damage to any target equal to the number of permanents you control of the chosen type.

Thicket Crasher

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Other Elementals you control have trample.

Seething Pathblazer

Sacrifice an Elemental: This creature gets +2/+0 and gains first strike until end of turn.

Lava Serpent

Haste
Cycling {2} ({2}, Discard this card: Draw a card.)

Scorchwalker

Bloodrush — {1}{R}{R}, Discard this card: Target attacking creature gets +5/+1 until end of turn.