Sleep

a creature becomes tapped — 565 cards in the game can cause this (Sleep is one).

When a creature becomes tapped thanks to Sleep:

1. Unctus, Grand Metatect — draws you 1 card
2. Sharae of Numbing Depths — draws you 1 card
3. Rewrite History — draws you 1 card
4. Stinging Licid — deals 2 damage
5. Gideon's Avenger — puts a +1/+1 counter on itself
6. Icewrought Sentry — gets +2/+1
7. Hawkeye's Bow — deals 1 damage
8. Cryoshatter — kills a creature
9. Don't Move — kills a creature
10. Hylda of the Icy Crown — triggers

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

anything becomes tapped — 699 cards in the game can cause this (Sleep is one).

1. Master Pakku — When Master Pakku becomes tapped thanks to Sleep, it mills a card

1 other card cares about it too. These are the ones with the most connections.

a sorcery is cast — 3,720 cards in the game can cause this (Sleep is one).

1. Spellweaver Volute — When Sleep is cast, Spellweaver Volute copies a spell
2. Lilah, Undefeated Slickshot — When Sleep is cast, Lilah, Undefeated Slickshot gets +1/+1
3. Niblis of Frost — When Sleep is cast, Niblis of Frost gets +1/+1
4. Primeval Bounty — When Sleep is cast, Primeval Bounty puts 3 counters on a creature
5. Tetsuko Umezawa, Pursuer — When Sleep is cast, Tetsuko Umezawa, Pursuer gets +1/+1
6. Thor, God of Thunder — When Sleep is cast, Thor, God of Thunder deals that spell's mana value damage
7. Krile Baldesion — When Sleep is cast, Krile Baldesion brings a card back
8. Summon: Good King Mog XII — When Sleep is cast, Summon: Good King Mog XII makes a token
9. Kykar, Wind's Fury — When Sleep is cast, Kykar, Wind's Fury makes a token
10. Blood Funnel — When Sleep is cast, Blood Funnel sacrifices a creature

424 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 (Sleep is one).

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

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