Iron Mastiff
Artifact Creature — Dog
Whenever this creature attacks, roll a d20 for each player being attacked and ignore all but the highest roll.
1—9 | This creature deals damage equal to its power to you.
10—19 | This creature deals damage equal to its power to defending player.
20 | This creature deals damage equal to its power to each opponent.
- CMC
- 4
- Mana cost
- Color identity
- C
- Rarity
- uncommon
- Set
- Commander Legends: Battle for Baldur's Gate
- Price
- $0.30
- EDHREC rank
- #6517
Iron Mastiff enters as a 2/2 and immediately rolls two dice, then pumps itself and a friend for each result — that's meaningful board presence and dice-roll triggers stapled to a single card. In Wyll, Blade of Frontiers // Sword Coast Sailor decks, where every die roll is supposed to do double duty, Iron Mastiff earns its slot on arrival.
Best Commanders
Commanders with the highest synergy
Wyll, Blade of Frontiers // Sword Coast Sailor
Wyll, Blade of Frontiers // Sword Coast Sailor triggers on every die roll, so Iron Mastiff's two built-in rolls on ETB translate to two immediate +1/+1 counters on Wyll before combat has even started — it's one of the most direct payoffs in the 99.
Mr. House, President and CEO
Mr. House, President and CEO rewards dice rolls with Servo tokens, and Iron Mastiff fires off two rolls the moment it lands, netting tokens and board buffs simultaneously for a two-mana investment that pulls well above its weight.
Sophia, Dogged Detective
Sophia, Dogged Detective cares about Clues and value generation, and Iron Mastiff slots in as a cheap dice-matters body that keeps the engine ticking — the synergy is lower than the top two slots, but the curve fit is clean.
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 |
Iron Mastiff is legal in Commander, Legacy, Vintage, and Oathbreaker, but its home is Commander — specifically the dice-roll tribal builds that those formats don't support at the same density. In Legacy and Vintage it's a non-factor; those formats have no interest in a 2/2 that rolls dice. Commander is where Iron Mastiff actually functions as a role-player, slotting into the Wyll and Mr. House archetypes that depend on stacking dice-roll triggers across the 99. Oathbreaker could theoretically support a dice-matters shell, but the format's smaller deck size makes the payoff thinner.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.30 bulk tier
At $0.30, Iron Mastiff is bulk — pick it up without thinking about it if you're building a dice-roll Commander deck. Bulk rares with narrow archetype fits tend to stay flat, so don't expect movement in either direction.
Explore
Sources
Mentioned
- Wyll, Blade of Frontiers // Sword Coast Sailor
- Mr. House, President and CEO
- Sophia, Dogged Detective
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.