Cresting Mosasaurus
Creature — Dinosaur
Emerge 
(You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When this creature enters, if you cast it, return each non-Dinosaur creature to its owner's hand.
- CMC
- 8
- Mana cost
- Color identity
- U
- Rarity
- rare
- Set
- Jurassic World Collection
- Price
- —
- EDHREC rank
- #10887
Cresting Mosasaurus hits the table as a massive uncounterable threat that bounces all other creatures — immediate, decisive board impact the moment it resolves. The cost is real: you need four Islands in play to trigger the bounce, which locks it firmly into mono-blue or heavy-blue shells, and Owen Grady, Raptor Trainer // Blue, Loyal Raptor decks are by far its best home.
Best Commanders
Commanders with the highest synergy
Owen Grady, Raptor Trainer // Blue, Loyal Raptor
Owen Grady, Raptor Trainer // Blue, Loyal Raptor runs Cresting Mosasaurus in nearly 88% of its decks because the Mosasaurus is a centerpiece payoff — Owen's raptor-training engine fills the board back up after the bounce while opponents are left empty-handed, turning a symmetrical wipe into a one-sided reset.
Ellie and Alan, Paleontologists
Ellie and Alan, Paleontologists picks up Cresting Mosasaurus as a high-impact Dinosaur that doubles as board control, fitting cleanly into the deck's fossil-and-stomp gameplan while providing a reset button when the board state turns against you.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Cresting Mosasaurus actually lives — the four-Islands restriction is easy to satisfy in a blue-heavy EDH deck, and a bounce-all-creatures effect stapled to a giant uncounterable body is exactly the kind of splashy, game-swinging card the format rewards. Legacy and Vintage allow it, but a seven-mana creature that asks you to run four basic Islands struggles to compete in formats where the game is usually over by turn three. Modern, Pioneer, Standard, and Pauper are all off the table. Oathbreaker is legal, and a blue-heavy spellslinger planeswalker could theoretically run it, though the mana investment is steep for a faster setting.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Cresting Mosasaurus isn't available at the moment — check Scryfall or TCGPlayer for current market values. Given its near-90% inclusion rate in Owen Grady decks and very narrow playability outside that archetype, demand is likely concentrated and tied directly to that commander's popularity.
Explore
Sources
Mentioned
- Owen Grady, Raptor Trainer // Blue, Loyal Raptor
- Ellie and Alan, Paleontologists
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.