Cresting Mosasaurus
Creature — Dinosaur
When this creature enters, if you cast it, return each non-Dinosaur creature to its owner's hand.
It preyed on anything it could sink its teeth into.
Legal in
Legacy, Vintage, Commander
Rulings (12)
Cresting Mosasaurus's last ability triggers if you cast it from any zone. It doesn't trigger if you put Cresting Mosasaurus onto the battlefield without casting it.
2023-11-10
The mana value of a creature spell with emerge isn’t affected by whether its emerge cost is paid. For example, if you cast Decimator of the Provinces for its emerge cost and sacrifice a creature whose mana value is 3, Decimator of the Provinces’s mana value remains 10.
2025-01-24
Emerge represents two static abilities that function while the spell with emerge is on the stack. “Emerge [cost]” means “You may cast this spell by paying [cost] and sacrificing a creature rather than paying its mana cost” and “If you chose to pay this spell’s emerge cost, its total cost is reduced by an amount of generic mana equal to the sacrificed creature’s mana value.”
2025-01-24
Once you begin to cast a spell with emerge, no player may take actions until you’re done. Notably, opponents can’t try to remove the creature you wish to sacrifice.
2025-01-24