Sea-Dasher Octopus
Creature — Octopus
Mutate 
(If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Flash
Whenever this creature deals combat damage to a player, draw a card.
- CMC
- 3
- Mana cost
- Color identity
- U
- Rarity
- rare
- Set
- Ikoria: Lair of Behemoths
- Price
- $1.37
- EDHREC rank
- #4505
Sea-Dasher Octopus turns any unblocked creature into a draw engine for a single blue mana, and the mutate cost means it comes down as early as turn two onto an existing threat. The verdict: run it in any blue deck that swings wide or mutates, and strongly consider it anywhere Kiki-Jiki, Mirror Breaker creates tokens — each copy that connects replaces itself. Otrimi, the Ever-Playful decks are the canonical home, but the card punches above its cost in any shell that attacks.
Best Commanders
Commanders with the highest synergy
Otrimi, the Ever-Playful
Sea-Dasher Octopus is an auto-include here — Otrimi, the Ever-Playful wants cheap mutate targets to chain together, and the Octopus turns every successful attack into a card draw while building toward Otrimi's graveyard recursion loop.
Illuna, Apex of Wishes
Sea-Dasher Octopus gives Illuna, Apex of Wishes a cheap early mutate host that draws cards on attacks, letting the deck develop card advantage while setting up the bigger mutate payoffs later.
Ivy, Gleeful Spellthief
Ivy, Gleeful Spellthief copies spells that target a single creature, so mutating Sea-Dasher Octopus once can immediately trigger a second copy of the effect — doubling the card draw without doubling the mana.
Runo Stromkirk
Runo Stromkirk builds toward large sea creatures, and Sea-Dasher Octopus is a low-cost early threat that generates card draw while the deck assembles its Krothuss engine.
Tatsunari, Toad Rider
Tatsunari, Toad Rider cares about enchantments and attacking, and Sea-Dasher Octopus slots in as an evasive attacker that draws cards whenever the Frog token or another threat slips through unblocked.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
In Commander, Sea-Dasher Octopus is at its best — the 100-card singleton format rewards cheap, repeatable card advantage, and the Octopus delivers exactly that stapled onto a mutate synergy piece. In Modern and Pioneer, it sees fringe play in tempo and mutate-adjacent shells, but faces stiff competition from more impactful two-drops; the payoff is real but the ceiling is lower in shorter game. Legacy and Vintage have the card legal but the power bar is set so high that a 1/1 requiring combat damage to draw rarely makes the cut outside dedicated synergy builds. Oathbreaker follows the Commander logic closely — if the planeswalker commander enables attacks, Sea-Dasher Octopus earns its slot.
Key Combos
Combo lines featuring this card
Kiki-Jiki, Mirror BreakerSea-Dasher Octopus
Infinite ETB; Infinite LTB; Infinite death triggers; Infinite sacrifice triggers; Infinite tapped creature tokens
View on Commander Spellbook ↗Price Context
Current price
$1.37 cheap tier
At $1.37, Sea-Dasher Octopus sits comfortably in the cheap tier — an easy inclusion that doesn't strain any budget. The price is unlikely to move much given its niche appeal, but for the decks that want it, it's one of the better dollar-rare overperformers in blue.
Explore
Sources
Mentioned
- Kiki-Jiki, Mirror Breaker
- Otrimi, the Ever-Playful
- Illuna, Apex of Wishes
- Ivy, Gleeful Spellthief
- Runo Stromkirk
- Tatsunari, Toad Rider
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.