U.S.S. Discovery, at Black Alert

an artifact is cast — 2,360 cards in U.S.S. Discovery's colors can cause this (U.S.S. Discovery is one).

When U.S.S. Discovery, at Black Alert is cast:

1. Patchwork Automaton — puts a +1/+1 counter on itself
2. Golem Foundry — puts a charge counter on itself
3. Lifesmith — gains you 3 life
4. Zuri, Warrior of Wakanda — puts a counter on a creature
5. Golem's Heart — gains you 1 life
6. Urza's Chalice — gains you 1 life
7. Solar Array — grants sunburst
8. Defiler of Vigor — puts a counter on a creature
9. Primeval Bounty — puts 3 counters on a creature
10. The Fantasticar — turns something into a creature

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

a nontoken artifact enters the battlefield — 2,369 cards in U.S.S. Discovery's colors can cause this (U.S.S. Discovery is one).

When U.S.S. Discovery, at Black Alert enters:

1. Ultron, Artificial Malevolence — makes a token
2. Surge Conductor — proliferates
3. Mirrorworks — makes a token

an artifact enters the battlefield — 2,505 cards in U.S.S. Discovery's colors can cause this (U.S.S. Discovery is one).

When U.S.S. Discovery, at Black Alert enters:

1. Elvish Archivist — puts 2 +1/+1 counters on itself
2. Arcbound Crusher — puts a +1/+1 counter on itself
3. Sarinth Steelseeker — searches a library
4. Battered Golem — untaps itself
5. Grinding Station — untaps itself
6. Teething Wurmlet — gains you 1 life
7. Perimeter Patrol — gets +1/+0
8. Serum Tank — puts a charge counter on itself
9. Gonti's Aether Heart — puts 2 counters on a permanent
10. Karstoderm — triggers

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