that means it has the Shift keyword, so it can be played for less than its usual, 7 Ink cost
This particular combo, discovered by Reddit user nagCopaleen, is based on the new day and night cycle introduced in the Innistrad: Midnight Hunt expansion, and it goes like this: Cast The Celestus Cast 4x Component Collector Cast Brimstone Vandal Activate the 3-mana ability on The Celestus Untap it with Component Collector and add mana with The Celestus (repeat four times) Spend three mana to activate the day and night ability on The Celestus Rinse and repeat steps 4-6 During each change of day and night cycle Brimstone Vandal will deal damage to your opponent, and since the cycle is infinite, you can easily OTK your opponent this way
Further supported by ramp effects like Utopia Sprawl, Sowing Mycospawn, Talisman of Impulse, and Kozilek's Command, Eldrazi Ramp consistently jumps ahead on mana, paving the way for colossal threats far earlier than expected
You do need to play it in a deck that has a lot of different lands in order to best abuse it
You do lose the ability to target your own permanents but that was rarely used cornercase
