Seedglaive Mentor
Creature — Mouse Soldier
Vigilance, haste
Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it.
- CMC
- 3
- Mana cost
- Color identity
- RW
- Rarity
- uncommon
- Set
- Bloomburrow
- Price
- $0.23
- EDHREC rank
- #10994
Seedglaive Mentor puts a free Equipment on the battlefield attached to a creature the moment it enters — no mana, no hoops. Outside of Mabel, Heir to Cragflame and dedicated Equipment shells, that payoff narrows fast, but inside them it's an engine piece that pulls ahead on board immediately.
Best Commanders
Commanders with the highest synergy

Mabel, Heir to Cragflame
Mabel, Heir to Cragflame wants every creature to hit the table already armed, and Seedglaive Mentor delivers exactly that — each new creature triggering Mabel's counters-on-equip ability while also receiving a free weapon, compounding board state faster than any manual equip step allows.

Arthur, Marigold Knight
Arthur, Marigold Knight produces a steady stream of creature tokens, and Seedglaive Mentor turns each of those tokens into an equipped threat on arrival — the value is real, but with a synergy score of 0.13 this is clearly a second-tier fit rather than a defining piece of the Arthur gameplan.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Seedglaive Mentor is a Commander card through and through — the free-equip trigger requires a density of creatures and Equipment payoffs that only multiplayer deckbuilding reliably supports. In Modern or Pioneer it competes against far more explosive Equipment synergies and lacks the raw speed to matter in fair matchups. Legacy and Vintage have no interest: the power bar is simply too high. Commander is where Seedglaive Mentor earns its slot, specifically inside Equipment-centric builds where the automatic attachment removes the usual tempo tax of paying equip costs each combat.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.23 bulk tier
At $0.23, Seedglaive Mentor sits firmly in bulk territory — easy to acquire as a throw-in or from any bulk bin. Bulk rares tied to a single popular commander can tick up slightly as that commander's deck count grows, but at 88% inclusion in Mabel, Heir to Cragflame lists there is no supply shortage, so the floor is where it is.
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Sources
Mentioned
- Mabel, Heir to Cragflame
- Arthur, Marigold Knight
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.