Quandrix, the Proof

hits creature — 976 cards in Quandrix's colors can cause this (Quandrix is one).

1. Jalira, Master Polymorphist — Jalira, Master Polymorphist can put Quandrix, the Proof onto the battlefield from your library
2. Polymorph — Polymorph can put Quandrix, the Proof onto the battlefield from your library
3. Birthing Ritual — Birthing Ritual can put Quandrix, the Proof onto the battlefield from your library
4. Proteus Staff — Proteus Staff can put Quandrix, the Proof onto the battlefield from your library
5. Synthetic Destiny — Synthetic Destiny can put Quandrix, the Proof onto the battlefield from your library
6. Mass Polymorph — Mass Polymorph can put Quandrix, the Proof onto the battlefield from your library

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

a Dragon deals combat damage — 109 cards in Quandrix's colors can cause this (Quandrix is one).

1. Broodcaller Scourge — When Quandrix, the Proof deals combat damage, Broodcaller Scourge puts a permanent onto the battlefield

a Dragon enters the battlefield — 117 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof enters:

1. Bloomvine Regent // Claim Territory — gains you 3 life
2. Dragon's Hoard — puts a gold counter on itself
3. Roiling Dragonstorm — triggers
4. Encroaching Dragonstorm — triggers

a creature attacks — 6,391 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. The Earth King — searches a library
4. Teo, Spirited Glider — draws you 1 card
5. Shadow Puppeteers — turns something into a creature
6. Screaming Swarm — mills a card
7. Imperious Mindbreaker — mills a card
8. Staff of Titania — makes a token
9. Saw — sacrifices a creature
10. Ultima Weapon — kills a creature an opponent controls

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

anything attacks — 6,391 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Madame Web, Clairvoyant — mills a card
3. Bonny Pall, Clearcutter — draws you 1 card
4. Hazardroot Herbalist — gives +1/+0
5. Ranger Class — puts a counter on a creature
6. Campsite Cuisine — sacrifices a Food
7. Gossip's Talent — triggers
8. Toph, Earthbending Master — puts a counter on a permanent
9. Alora, Merry Thief — triggers
10. Twins of Discord — triggers

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

a creature blocks — 6,391 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof blocks:

1. Barrow-Blade — strips abilities
2. Favor of the Woods — gains you 3 life
3. Gift of the Woods — gives +0/+3
4. Noxious Assault — puts a counter on a permanent
5. Ferocity — puts a counter on a permanent
6. Mammoth Harness — grants first strike
7. Dead-Iron Sledge — kills a creature
8. Dwindle — kills a creature

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

a creature is cast — 6,423 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof is cast:

1. Primeval Bounty — makes a token
2. Dancing from Dark to Dawn — puts that spell's mana value counters on a creature
3. Summon: Fenrir — it arrives with counters thanks to Summon: Fenrir
4. Mona Lisa, Ever Adaptable — makes a token
5. Champions of the Perfect — draws you 1 card
6. Masked Admirers — returns itself from the graveyard
7. Primordial Sage — draws you 1 card
8. Oketra's Monument — makes a token
9. Beast Whisperer — draws you 1 card
10. Silverback Elder — triggers

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

a nontoken creature enters the battlefield — 6,528 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof enters:

1. Dual Nature — makes a token
2. Arni, Humble Scribe — untaps itself
3. Bramble Sovereign — makes a token
4. Soul of the Harvest — draws you 1 card
5. Surrak and Goreclaw — puts a counter on a permanent
6. Rocksteady, Mutant Marauder — puts a counter on a creature
7. Radagast the Brown — searches a library
8. Lonis, Cryptozoologist — triggers
9. Warden of the Grove — triggers

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

a creature enters the battlefield — 7,050 cards in Quandrix's colors can cause this (Quandrix is one).

When Quandrix, the Proof enters:

1. Ray Fillet, Wave Warrior — puts a counter on itself
2. Legolas Greenleaf — puts a counter on a permanent

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