Wargate

a permanent enters the battlefield — 152 cards in the game can cause this (Wargate is one).

When a permanent enters thanks to Wargate:

1. Dawn-Blessed Pennant — gains you 1 life
2. Altar of the Brood — mills a card
3. Amareth, the Lustrous — searches a library
4. Rimefire Torque — puts a charge counter on itself
5. Eye of Singularity — kills a permanent

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

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

When Wargate is cast:

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

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

anything that is not a token enters the battlefield — 25,747 cards in the game can cause this (Wargate is one).

1. Canoptek Spyder — When a permanent enters thanks to Wargate, Canoptek Spyder draws you 1 card

anything enters the battlefield — 26,499 cards in the game can cause this (Wargate is one).

1. Wan Shi Tong, Librarian — When Wan Shi Tong, Librarian enters thanks to Wargate, it puts X counters on a permanent
2. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a permanent enters thanks to Wargate, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
3. HYDRA Assault Robot — When a permanent enters thanks to Wargate, HYDRA Assault Robot deals 1 damage
4. Pigment Wrangler // Striking Palette — When Pigment Wrangler // Striking Palette enters thanks to Wargate, it becomes prepared
5. Sokka, Bold Boomeranger — When Sokka, Bold Boomeranger enters thanks to Wargate, it draws and discards
6. Era of Innovation — When a permanent enters thanks to Wargate, Era of Innovation puts a counter on a permanent you control
7. Sanar, Unfinished Genius // Wild Idea — When Sanar, Unfinished Genius // Wild Idea enters thanks to Wargate, it becomes prepared

16 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 (Wargate is one).

When Wargate 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.