Jon Irenicus, Shattered One

an Elf attacks — 723 cards in the game can cause this (Jon Irenicus is one).

When Jon Irenicus, Shattered One attacks:

1. Celeborn the Wise — scries
2. Tyvar the Bellicose — grants deathtouch
3. Harald Unites the Elves — shrinks a creature by -1/-1
4. Arboreal Alliance — triggers

a nontoken Elf enters the battlefield — 728 cards in the game can cause this (Jon Irenicus is one).

1. Wirewood Hivemaster — When Jon Irenicus, Shattered One enters, Wirewood Hivemaster makes a token

an Elf it boosts — 739 cards in the game can cause this.

1. Pride of the Perfect — Pride of the Perfect gives Jon Irenicus, Shattered One bigger stats

738 other cards cause it too. These are the ones with the most connections.

an Elf enters the battlefield — 752 cards in the game can cause this (Jon Irenicus is one).

When Jon Irenicus, Shattered One enters:

1. Wolverine Riders — gains you its toughness life
2. Elvish Warmaster — makes a token
3. Thranduil, the Elvenking — draws you 2 cards
4. Elvish Vanguard — puts a +1/+1 counter on itself
5. Marwyn, the Nurturer — puts a +1/+1 counter on itself
6. Woodland Weavemaster — gets +1/+1
7. High Perfect Morcant — puts a counter on a permanent an opponent controls
8. Maralen, Fae Ascendant — exiles a card from an opponent's library

a nontoken Wizard enters the battlefield — 1,243 cards in the game can cause this (Jon Irenicus is one).

1. Inalla, Archmage Ritualist — When Jon Irenicus, Shattered One enters, Inalla, Archmage Ritualist makes a token

a Wizard creature enters the battlefield — 1,264 cards in the game can cause this (Jon Irenicus is one).

1. Diviner's Wand — When Jon Irenicus, Shattered One enters, Diviner's Wand triggers

a Wizard creature it grants abilities to — 1,269 cards in the game can cause this.

1. Astrologian's Planisphere — Astrologian's Planisphere gives Jon Irenicus, Shattered One an extra ability

1,268 other cards cause it too. These are the ones with the most connections.

a Wizard creature it grants types to — 1,269 cards in the game can cause this.

1. Blue Mage's Cane — Blue Mage's Cane gives Jon Irenicus, Shattered One an extra creature type

1,268 other cards cause it too. These are the ones with the most connections.

a card is drawn — 3,815 cards in the game can cause this (Jon Irenicus is one).

When Jon Irenicus, Shattered One makes a player draw a card:

1. Temmet, Naktamun's Will — gives +1/+1
2. Niv-Mizzet, Parun — deals 1 damage
3. Aether Syphon — mills a card
4. The Locust God — makes a token
5. Starving Revenant — makes each opponent lose 1 life
6. Ominous Seas — puts a foreshadow counter on itself
7. Dream Trawler — gets +1/+0
8. Iron Man, Armored Avenger — puts a counter on a creature
9. The Astonishing Ant-Man — puts a +1/+1 counter on itself
10. Psychosis Crawler — makes each opponent lose 1 life

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

anything gets a counter — 4,415 cards in the game can cause this (Jon Irenicus is one).

1. All Will Be One — When a permanent gets a counter thanks to Jon Irenicus, Shattered One, All Will Be One deals that much damage
2. Lonis, Genetics Expert — When Lonis, Genetics Expert gets a counter thanks to Jon Irenicus, Shattered One, it triggers

7 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 (Jon Irenicus is one).

When Jon Irenicus, Shattered One attacks:

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

118 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 (Jon Irenicus is one).

When Jon Irenicus, Shattered One 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. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
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

181 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 (Jon Irenicus is one).

When Jon Irenicus, Shattered One blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Tide of War — sacrifices a creature
3. Dead-Iron Sledge — kills a creature
4. Dwindle — kills a creature

24 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 (Jon Irenicus is one).

When Jon Irenicus, Shattered One 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

312 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 (Jon Irenicus is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Jon Irenicus, Shattered One enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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