Serra's Guardian

hits creature — 2,283 cards in the game can cause this (Serra's Guardian is one).

1. Jalira, Master Polymorphist — Jalira, Master Polymorphist can put Serra's Guardian onto the battlefield from your library
2. Kethek, Crucible Goliath — Kethek, Crucible Goliath can put Serra's Guardian onto the battlefield from your library
3. Polymorph — Polymorph can put Serra's Guardian onto the battlefield from your library
4. Birthing Ritual — Birthing Ritual can put Serra's Guardian onto the battlefield from your library
5. Industrial Advancement — Industrial Advancement can put Serra's Guardian onto the battlefield from your library
6. Killer Instinct — Killer Instinct can put Serra's Guardian onto the battlefield from your library
7. Arthur, Marigold Knight — Arthur, Marigold Knight can put Serra's Guardian onto the battlefield from your library
8. Proteus Staff — Proteus Staff can put Serra's Guardian onto the battlefield from your library
9. Synthetic Destiny — Synthetic Destiny can put Serra's Guardian onto the battlefield from your library
10. Divergent Transformations — Divergent Transformations can put Serra's Guardian onto the battlefield from your library

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

an Angel enters the battlefield — 354 cards in the game can cause this (Serra's Guardian is one).

When Serra's Guardian enters:

1. Bishop of Wings — gains you 4 life
2. Youthful Valkyrie — puts a +1/+1 counter on itself
3. Seraph Sanctuary — gains you 1 life
4. Righteous Valkyrie — gains you that creature's toughness life

anything attacks — 17,785 cards in the game can cause this (Serra's Guardian is one).

When Serra's Guardian 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

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

a creature attacks — 17,785 cards in the game can cause this (Serra's Guardian is one).

When Serra's Guardian 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. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Path of Mettle // Metzali, Tower of Triumph — triggers
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

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

a nontoken creature attacks — 17,785 cards in the game can cause this (Serra's Guardian is one).

When Serra's Guardian attacks:

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

a creature it grants abilities to — 19,235 cards in the game can cause this (Serra's Guardian is one).

Serra's Guardian gives:

1. Pollywog Prodigy — vigilance
2. Soul-Scar Mage — vigilance
3. Tomik, Izzet Sparkmage — vigilance
4. Havengul Lich — vigilance
5. Saheeli, Radiant Creator — vigilance
6. Windrider Wizard — vigilance
7. Master of Winds — vigilance
8. Sokka, Bold Boomeranger — vigilance
9. Rockslide Sorcerer — vigilance
10. Umara Wizard // Umara Skyfalls — vigilance

19,224 other cards care about it too. These are the ones with the most connections.

a creature enters the battlefield — 19,635 cards in the game can cause this (Serra's Guardian is one).

When Serra's Guardian 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

3,004 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,290 cards in the game can cause this (Serra's Guardian is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Serra's Guardian enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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