Thryx, the Sudden Storm

an Elemental enters the battlefield — 754 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm enters:

1. Champion of the Path — deals its power damage
2. Risen Reef — puts a land onto the battlefield

an artifact it makes cheaper to cast — 4,531 cards in the game can cause this (Thryx is one).

Thryx, the Sudden Storm reduces what:

1. Lich-Knights' Conquest — costs
2. Age of Ultron — costs
3. Phyrexian Rebirth — costs
4. Join the Collective — costs
5. Eusocial Engineering — costs
6. Sidequest: Hunt the Mark // Yiazmat, Ultimate Mark — costs

4,525 other cards care about it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

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

a creature attacks — 17,934 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Jolene, Plundering Pugilist — makes a token
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

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

a creature blocks — 17,934 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Heat of Battle — deals 1 damage
5. Battle Strain — deals 1 damage
6. Favor of the Woods — gains you 3 life
7. Tide of War — sacrifices a creature
8. Dead-Iron Sledge — kills a creature
9. Dwindle — kills a creature
10. Shield of the Righteous — triggers

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm attacks:

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

a creature it makes cheaper to cast — 19,392 cards in the game can cause this (Thryx is one).

Thryx, the Sudden Storm reduces what:

1. Extravagant Replication — costs
2. Fuss // Bother — costs
3. Indulge // Excess — costs
4. Metallurgic Summonings — costs
5. Invasion of Tolvada // The Broken Sky — costs
6. Start // Finish — costs
7. Haunt the Network — costs
8. Urza, Planeswalker — costs
9. In the Pale Moonlight — costs
10. Vraska, Relic Seeker — costs

19,381 other cards care about it too. These are the ones with the most connections.

a creature enters the battlefield — 19,800 cards in the game can cause this (Thryx is one).

When Thryx, the Sudden Storm enters:

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

3,029 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,499 cards in the game can cause this (Thryx is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Thryx, the Sudden Storm enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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