Commander Mustard

a Soldier creature enters the battlefield — 871 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

1. Veteran's Armaments — When Commander Mustard enters, Veteran's Armaments triggers

anything deals noncombat damage — 2,055 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard deals noncombat damage:

1. Quest for Pure Flame — puts a quest counter on itself
2. Fear of Burning Alive — deals that amount damage
3. Chandra's Incinerator — deals that much damage
4. Chandra's Pyreling — gets +1/+0
5. Talon of Pain — puts a charge counter on itself
6. Asgardian Inspiration — returns itself from the graveyard
7. Thor, Guardian of Midgard — exiles a card from your library
8. Virtue of Courage // Embereth Blaze — exiles a card from your library

30 other cards care about it too. These are the ones with the most connections.

life is lost — 1,372 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard makes a player lose life:

1. Nesting Bot — raises your speed
2. Howlsquad Heavy — raises your speed
3. Walking Sarcophagus — raises your speed
4. Starting Column — raises your speed
5. Racers' Scoreboard — raises your speed
6. Outpace Oblivion — raises your speed
7. Kickoff Celebrations — raises your speed
8. Goblin Surveyor — raises your speed
9. Mindcrank — mills a card
10. Leonin Surveyor — raises your speed

14 other cards care about it too. These are the ones with the most connections.

a Human enters the battlefield — 2,042 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard enters:

1. Thalia's Lieutenant — puts a +1/+1 counter on itself
2. Champion of the Parish — puts a +1/+1 counter on itself
3. Erkenbrand, Lord of Westfold — gives +1/+0
4. Beregond of the Guard — gives +1/+1
5. Théoden, King of Rohan — grants double strike
6. Vigilante Justice — deals 1 damage
7. Lossarnach Captain — taps a creature an opponent controls

a creature attacks — 6,550 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard attacks:

1. Adaptive Omnitool — searches a library
2. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
3. Staff of Titania — makes a token
4. Saw — sacrifices a creature
5. Ultima Weapon — kills a creature an opponent controls
6. Path of Mettle // Metzali, Tower of Triumph — triggers
7. Total War — kills a creature
8. The Spear of Leonidas — triggers
9. Super-Soldier Serum — triggers
10. Norin the Wary — flickers itself

150 other cards care about it too. These are the ones with the most connections.

anything attacks — 6,550 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Apothecary White — makes a token
4. Guide of Souls — triggers
5. Banon, the Returners' Leader — draws and discards
6. Three Dog, Galaxy News DJ — sacrifices an Aura
7. Inti, Seneschal of the Sun — triggers
8. Gut, True Soul Zealot — sacrifices a creature or artifact
9. Cool but Rude — draws and discards
10. Swashbuckler Extraordinaire — sacrifices a Treasure

62 other cards care about it too. These are the ones with the most connections.

a creature blocks — 6,550 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard blocks:

1. Barrow-Blade — strips abilities
2. Heat of Battle — deals 1 damage
3. Battle Strain — deals 1 damage
4. Tide of War — sacrifices a creature
5. Dead-Iron Sledge — kills a creature

16 other cards care about it too. These are the ones with the most connections.

a nontoken creature attacks — 6,550 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard attacks:

1. Basri Ket — makes a token
2. Militia's Pride — makes a token

a creature enters the battlefield — 7,303 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

When Commander Mustard enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

254 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 10,759 cards in Commander Mustard's colors can cause this (Commander Mustard is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Commander Mustard enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

27 other cards care about it too. These are the ones with the most connections.