Erratic Cyclops

a Shaman creature enters the battlefield — 539 cards in the game can cause this (Erratic Cyclops is one).

1. Thornbite Staff — When Erratic Cyclops enters, Thornbite Staff triggers

cast a sorcery — 3,720 cards in the game can cause this.

1. Renegade Bull — When an instant is cast thanks to Renegade Bull, Erratic Cyclops gets +X/+0, where X is that spell's mana value
2. Finale of Promise — When Finale of Promise is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
3. Ogre Battlecaster — When an instant is cast thanks to Ogre Battlecaster, Erratic Cyclops gets +X/+0, where X is that spell's mana value
4. Wildfire Eternal — When an instant is cast thanks to Wildfire Eternal, Erratic Cyclops gets +X/+0, where X is that spell's mana value
5. Dreadhorde Arcanist — When an instant is cast thanks to Dreadhorde Arcanist, Erratic Cyclops gets +X/+0, where X is that spell's mana value
6. Scholar of Combustion — When an instant is cast thanks to Scholar of Combustion, Erratic Cyclops gets +X/+0, where X is that spell's mana value
7. Goblin Dark-Dwellers — When an instant is cast thanks to Goblin Dark-Dwellers, Erratic Cyclops gets +X/+0, where X is that spell's mana value
8. Crackling Spellslinger — When an instant is cast thanks to Crackling Spellslinger, Erratic Cyclops gets +X/+0, where X is that spell's mana value
9. Seifer Almasy — When an instant is cast thanks to Seifer Almasy, Erratic Cyclops gets +X/+0, where X is that spell's mana value
10. Impulsivity — When an instant is cast thanks to Impulsivity, Erratic Cyclops gets +X/+0, where X is that spell's mana value

3,710 other cards cause it too. These are the ones with the most connections.

cast an instant — 3,931 cards in the game can cause this.

1. First Day of Class — When First Day of Class is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
2. Wyll's Reversal — When Wyll's Reversal is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
3. Return the Favor — When Return the Favor is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
4. Blind Fury — When Blind Fury is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
5. Pyre Rhymer // Molten Tide — When Pyre Rhymer // Molten Tide is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
6. Demoralize — When Demoralize is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
7. Dual Strike — When Dual Strike is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
8. Storm King's Thunder — When Storm King's Thunder is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
9. Turn Inside Out — When Turn Inside Out is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value
10. Divergent Transformations — When Divergent Transformations is cast, Erratic Cyclops gets +X/+0, where X is that spell's mana value

3,921 other cards cause it too. These are the ones with the most connections.

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

When Erratic Cyclops 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

111 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 (Erratic Cyclops is one).

When Erratic Cyclops 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

180 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 (Erratic Cyclops is one).

When Erratic Cyclops 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

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

a creature deals combat damage — 17,934 cards in the game can cause this (Erratic Cyclops is one).

When Erratic Cyclops deals combat damage:

1. Primo, the Unbounded — makes a token
2. Locutus of Borg — makes a token
3. Antagonist Incorporator — makes a token
4. Hive Mind Coprocessor — makes you lose life

193 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 (Erratic Cyclops is one).

When Erratic Cyclops attacks:

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

a creature is cast — 18,010 cards in the game can cause this (Erratic Cyclops is one).

When Erratic Cyclops is cast:

1. Primeval Bounty — makes a token
2. Bloodbond March — brings a card back
3. Dancing from Dark to Dawn — puts that spell's mana value counters on a creature
4. Endrek Sahr, Master Breeder — makes that spell's mana value tokens
5. Summon: Fenrir — it arrives with counters thanks to Summon: Fenrir
6. Summon: Brynhildr — grants haste
7. Skittering Horror — sacrifices itself
8. Skittering Skirge — sacrifices itself
9. Skittering Monstrosity — sacrifices itself
10. Silverback Elder — triggers

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

a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (Erratic Cyclops is one).

When Erratic Cyclops enters:

1. Riku of Two Reflections — makes a token
2. Samwise Gamgee — makes a token
3. Dual Nature — makes a token
4. Angelic Sell-Sword — makes a token
5. Lonis, Cryptozoologist — triggers

28 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 (Erratic Cyclops is one).

When Erratic Cyclops enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
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

299 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 (Erratic Cyclops is one).

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

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