| Cosmos Crystal |
|User(s):||Guardian Cosmos (protector)|
The "Cosmos Crystal", or "Cosmos Seed", is the Sailor Crystal of the Galaxy Cauldron. Protected by Guardian Cosmos, it released the ultimate universal Lambda Power when awakened, and that power was strong enough to recreate and rebirth an entire galaxy worth of Sailor Crystals. It was never shown in the manga, but its effects were easy to see.