Astor, Bearer of Blades

a Warrior creature enters the battlefield — 611 cards in Astor's colors can cause this (Astor is one).

1. Obsidian Battle-Axe — When Astor, Bearer of Blades enters, Obsidian Battle-Axe triggers

a Warrior enters the battlefield — 613 cards in Astor's colors can cause this (Astor is one).

1. Mardu Woe-Reaper — When Astor, Bearer of Blades enters, Mardu Woe-Reaper hits a graveyard

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

When Astor, Bearer of Blades 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 Astor's colors can cause this (Astor is one).

When Astor, Bearer of Blades 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. Glory Bearers — gives +0/+1
5. Saw — sacrifices a creature
6. Ultima Weapon — kills a creature an opponent controls
7. Total War — kills a creature
8. The Spear of Leonidas — triggers
9. Super-Soldier Serum — triggers
10. Norin the Wary — flickers itself

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

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

When Astor, Bearer of Blades 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

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

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

When Astor, Bearer of Blades blocks:

1. Barrow-Blade — strips abilities
2. Heat of Battle — deals 1 damage
3. Battle Strain — deals 1 damage
4. Noble Stand — gains you 2 life
5. Battle Cry — gives +0/+1
6. Tide of War — sacrifices a creature
7. Dead-Iron Sledge — kills a creature

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

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

When Astor, Bearer of Blades attacks:

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

a creature deals combat damage — 6,550 cards in Astor's colors can cause this (Astor is one).

1. Antagonist Incorporator — When Astor, Bearer of Blades deals combat damage, Antagonist Incorporator makes a token

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

a creature is cast — 6,572 cards in Astor's colors can cause this (Astor is one).

When Astor, Bearer of Blades is cast:

1. Summon: Brynhildr — grants haste
2. God-Eternal Oketra — makes a token
3. Oketra's Monument — makes a token
4. Quest for the Holy Relic — puts a quest counter on itself
5. Bontu's Monument — makes each opponent lose 1 life
6. Vanquisher's Banner — draws you 1 card
7. Oltec Matterweaver — triggers
8. Pure Reflection — kills a Reflection
9. Flickering Hound — flickers a creature you control
10. Hazoret's Monument — draws and discards

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

a nontoken creature enters the battlefield — 6,715 cards in Astor's colors can cause this (Astor is one).

When Astor, Bearer of Blades enters:

1. Angelic Sell-Sword — makes a token
2. Spirit Bonds — makes a token
3. Metastatic Evangel — proliferates
4. Radiant Solar — triggers

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

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

When Astor, Bearer of Blades 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

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

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

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Astor, Bearer of Blades enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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