Gisa and Geralf

put a Zombie creature into a graveyard — 21 cards in the game can cause this.

1. Apprentice Necromancer — When Apprentice Necromancer is in the graveyard, Gisa and Geralf can bring it back
2. Silversmote Ghoul — When Silversmote Ghoul is in the graveyard, Gisa and Geralf can bring it back
3. Wall of Limbs — When Wall of Limbs is in the graveyard, Gisa and Geralf can bring it back
4. Nim Replica — When Nim Replica is in the graveyard, Gisa and Geralf can bring it back
5. Gangrenous Zombies — When Gangrenous Zombies is in the graveyard, Gisa and Geralf can bring it back
6. Plague Dogs — When Plague Dogs is in the graveyard, Gisa and Geralf can bring it back
7. Haunted Cadaver — When Haunted Cadaver is in the graveyard, Gisa and Geralf can bring it back
8. Liliana's Steward — When Liliana's Steward is in the graveyard, Gisa and Geralf can bring it back
9. Priest of the Haunted Edge — When Priest of the Haunted Edge is in the graveyard, Gisa and Geralf can bring it back
10. Barrow Ghoul — When Barrow Ghoul is in the graveyard, Gisa and Geralf can bring it back

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

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

1. Inalla, Archmage Ritualist — When Gisa and Geralf enters, Inalla, Archmage Ritualist makes a token

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

1. Diviner's Wand — When Gisa and Geralf enters, Diviner's Wand triggers

a creature leaves a graveyard — 1,302 cards in the game can cause this (Gisa and Geralf is one).

When a Zombie leaves a graveyard thanks to Gisa and Geralf:

1. Grim Reaper's Scythe — makes a token
2. Syr Konrad, the Grim — deals 1 damage
3. Cyan, Vengeful Samurai — puts a +1/+1 counter on itself
4. Along the Crooked Way — puts a counter on a Goblin or Army
5. Skeleton Crew — makes a token
6. Desecrated Tomb — makes a token
7. Chalk Outline — makes a token
8. Insidious Roots — makes a token
9. Undead Hand Ninja — makes each opponent lose 1 life
10. Rot Farm Mortipede — gets +1/+0

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

anything leaves a graveyard — 2,503 cards in the game can cause this (Gisa and Geralf is one).

When a Zombie leaves a graveyard thanks to Gisa and Geralf:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

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

a Human enters the battlefield — 4,639 cards in the game can cause this (Gisa and Geralf is one).

When Gisa and Geralf enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

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

a card in a graveyard — 7,589 cards in the game can cause this (Gisa and Geralf is one).

1. Samwise Gamgee — Gisa and Geralf puts cards into the graveyard that Samwise Gamgee can bring back
2. Bloodbond March — Gisa and Geralf puts cards into the graveyard that Bloodbond March can bring back
3. Thor, God of Thunder — Gisa and Geralf puts cards into the graveyard that Thor, God of Thunder can bring back
4. Gale, Waterdeep Prodigy — Gisa and Geralf puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
5. Harness the Storm — Gisa and Geralf puts cards into the graveyard that Harness the Storm can bring back
6. Transplant Theorist — Gisa and Geralf puts cards into the graveyard that Transplant Theorist can bring back
7. Heart-Shaped Herb — Gisa and Geralf puts cards into the graveyard that Heart-Shaped Herb can bring back
8. Wayward Angel — Gisa and Geralf fills your graveyard toward the 7 or more cards Wayward Angel needs
9. Rescue from the Underworld — Gisa and Geralf puts cards into the graveyard that Rescue from the Underworld can bring back
10. Victimize — Gisa and Geralf puts cards into the graveyard that Victimize can bring back

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Gisa and Geralf is one).

When a card hits the graveyard thanks to Gisa and Geralf:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Planar Void — hits a graveyard
3. Measure of Wickedness — gives an opponent control of itself
4. Energy Field — sacrifices itself

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 (Gisa and Geralf is one).

When Gisa and Geralf attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers

123 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 (Gisa and Geralf is one).

When Gisa and Geralf attacks:

1. Adaptive Omnitool — searches a library
2. Saw — sacrifices a creature

198 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 (Gisa and Geralf is one).

When Gisa and Geralf 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. Aetherstorm Roc — puts a counter on a permanent you control

357 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 (Gisa and Geralf is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Gisa and Geralf enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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