In the Presence of Ages

an instant is cast — 3,931 cards in the game can cause this (In the Presence of Ages is one).

When In the Presence of Ages is cast:

1. Lunar Mystic — draws you 1 card
2. Ojer Pakpatiq, Deepest Epoch // Temple of Cyclical Time — grants rebound
3. Repeated Reverberation — copies an ability
4. Riku of Two Reflections — copies a spell
5. Sword of Wealth and Power — copies a spell
6. Lilah, Undefeated Slickshot — gets +1/+1
7. Gale, Waterdeep Prodigy — brings a card back
8. Harness the Storm — brings a card back
9. In the Eye of Chaos — counters a spell
10. Niblis of Frost — taps a creature an opponent controls

427 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 (In the Presence of Ages is one).

In the Presence of Ages:

1. Samwise Gamgee — puts cards into the graveyard that Samwise Gamgee can bring back
2. Bloodbond March — puts cards into the graveyard that Bloodbond March can bring back
3. Transplant Theorist — puts cards into the graveyard that Transplant Theorist can bring back
4. Heart-Shaped Herb — puts cards into the graveyard that Heart-Shaped Herb can bring back
5. Wayward Angel — fills your graveyard toward the 7 or more cards Wayward Angel needs
6. Rescue from the Underworld — puts cards into the graveyard that Rescue from the Underworld can bring back
7. Victimize — puts cards into the graveyard that Victimize can bring back
8. Bound // Determined — puts cards into the graveyard that Bound // Determined can bring back
9. Enlightened Confidant — puts cards into the graveyard that Enlightened Confidant can bring back
10. Tergrid, God of Fright // Tergrid's Lantern — puts cards into the graveyard that Tergrid, God of Fright // Tergrid's Lantern 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 (In the Presence of Ages is one).

When a card hits the graveyard thanks to In the Presence of Ages:

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 is cast — 31,128 cards in the game can cause this (In the Presence of Ages is one).

When In the Presence of Ages is cast:

1. Windrider Wizard — draws you 1 card
2. Relic Amulet — puts a charge counter on itself
3. Rockslide Sorcerer — deals 1 damage
4. Umara Wizard // Umara Skyfalls — grants flying
5. Alania, Divergent Storm — makes an opponent draw 1 card
6. Umara Mystic — gets +2/+0
7. Master of Winds — triggers

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