Mysteries of the Deep 
Instant
Appears in 137 of 25,250 decks (0.5%).
Appears with these commanders:
| Commander | Decks | Synergy ↓ |
|---|---|---|
| Livaan, Cultist of Tiamat + Sword Coast Sailor | 1 | None |
| The Emperor of Palamecia // The Lord Master of Hell | 1 | None |
| Living Tsunami | 1 | 0.99 |
| Mirror Image | 1 | 0.99 |
| Grappling Kraken | 1 | 0.99 |
| Ghost Ship | 1 | 0.99 |
| Brinelin, the Moon Kraken + Esior, Wardwing Familiar | 1 | 0.49 |
| Ignis Scientia | 2 | 0.33 |
| Archive Dragon | 1 | 0.33 |
| Hedron Crab | 3 | 0.29 |
| Roil Cartographer | 1 | 0.24 |
| Erinis, Gloom Stalker + Sword Coast Sailor | 3 | 0.21 |
| Coiling Oracle | 1 | 0.19 |
| Prismari Apprentice | 1 | 0.14 |
| Shipwreck Singer | 1 | 0.12 |
| Caelorna, Coral Tyrant | 1 | 0.12 |
| Ultros, Obnoxious Octopus | 1 | 0.11 |
| Avalanche Caller | 2 | 0.08 |
| Living Conundrum | 1 | 0.08 |
| Esperzoa | 1 | 0.07 |
| Maelstrom Muse | 1 | 0.07 |
| Ruin Crab | 11 | 0.06 |
| Tatyova, Steward of Tides | 9 | 0.05 |
| Quandrix Apprentice | 2 | 0.05 |
| Merrow Reejerey | 1 | 0.05 |
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