Flying

When this creature transforms into Avacyn, the Purifier, it deals 3 damage to each other creature and each opponent.

Partner with Shabraz, the Skyshark (When this creature enters the battlefield, target player may put Shabraz into their hand from their library, then shuffle.)

Whenever you discard a card, put a +1/+1 counter on Brallin, Skyshark Rider and it deals 1 damage to each opponent.

: Target Shark gains trample until end of turn.

+1: Chandra, Flame's Catalyst deals 3 damage to each opponent.

−2: You may cast target red instant or sorcery card from your graveyard. If that spell would be put into your graveyard this turn, exile it instead.

−8: Discard your hand, then draw seven cards. Until end of turn, you may cast spells from your hand without paying their mana costs.

+1: Chandra, Roaring Flame deals 2 damage to target player or planeswalker.

−2: Chandra, Roaring Flame deals 2 damage to target creature.

−7: Chandra, Roaring Flame deals 6 damage to each opponent. Each player dealt damage this way gets an emblem with "At the beginning of your upkeep, this emblem deals 3 damage to you."

Target creature you control deals damage equal to its power to each other creature and each opponent.

Whenever you cycle another card, Drannith Stinger deals 1 damage to each opponent.

Cycling (, Discard this card: Draw a card.)

, Sacrifice an artifact: Embraal Gear-Smasher deals 2 damage to each opponent.

Flip a coin until you lose a flip or choose to stop flipping. If you lose a flip, Fiery Gambit has no effect. If you win one or more flips, Fiery Gambit deals 3 damage to target creature. If you win two or more flips, Fiery Gambit deals 6 damage to each opponent. If you win three or more flips, draw nine cards and untap all lands you control.

Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent.

When Gibbering Fiend enters the battlefield, it deals 1 damage to each opponent.

Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, Gibbering Fiend deals 1 damage to that player.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)

Whenever Grenzo's Ruffians deals combat damage to an opponent, it deals that much damage to each other opponent.

Indestructible, haste

Hazoret the Fervent can't attack or block unless you have one or fewer cards in hand.

, Discard a card: Hazoret deals 2 damage to each opponent.

Whenever a commander you control deals combat damage to an opponent, it deals that much damage to each other opponent.

Partner (You can have two commanders if both have partner.)

Lash Out deals 3 damage to target creature. Clash with an opponent. If you win, Lash Out deals 3 damage to that creature's controller. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher converted mana cost.)

Defender

: Lobber Crew deals 1 damage to each opponent.

Whenever you cast a multicolored spell, untap Lobber Crew.

(Transforms from Path of Mettle.)

: Add one mana of any color.

, : Metzali, Tower of Triumph deals 2 damage to each opponent.

, : Choose a creature at random that attacked this turn. Destroy that creature.

When Oath of Chandra enters the battlefield, it deals 3 damage to target creature an opponent controls.

At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, Oath of Chandra deals 2 damage to each opponent.

Indestructible

As long as your devotion to red is less than five, Purphoros isn't a creature.

Whenever another creature enters the battlefield under your control, Purphoros deals 2 damage to each opponent.

: Creatures you control get +1/+0 until end of turn.

Your opponents can't gain life.

At the beginning of your upkeep, Quakebringer deals 2 damage to each opponent. This ability triggers only if Quakebringer is on the battlefield or if Quakebringer is in your graveyard and you control a Giant.

Foretell

Whenever an artifact enters the battlefield under your control, Reckless Fireweaver deals 1 damage to each opponent.

: Add .

, : Shivan Gorge deals 1 damage to each opponent.

Whenever Spireside Infiltrator becomes tapped, it deals 1 damage to each opponent.

When Storm Caller enters the battlefield, it deals 2 damage to each opponent.

Defender

: Thermo-Alchemist deals 1 damage to each opponent.

Whenever you cast an instant or sorcery spell, untap Thermo-Alchemist.

Landfall — Whenever a land enters the battlefield under your control, Tunneling Geopede deals 1 damage to each opponent.

Landfall — Whenever a land enters the battlefield under your control, exile the top card of your library. You may play that card for as long as it remains exiled.

At the beginning of your end step, if there are cards exiled with Valakut Exploration, put them into their owner's graveyard, then Valakut Exploration deals that much damage to each opponent.