A 3-mana mono-red Dwarf from The Hobbit that hands out a free Equipment on entry — and grants double strike to every equipped attacker whenever it swings.
Equipment-matters decks. The double-strike trigger scales with how many equipped creatures are attacking, rewarding a deck that's leaned fully into an Equipment package.
Aggressive red decks. A free Equipment token on entry and a real combat payoff on attack both apply pressure immediately, which fits an aggressive game plan.
Voltron and single-big-threat decks. Even outside a wide Equipment shell, doubling the damage output of one heavily-equipped attacker is a real finishing tool.
How it does in Commander
As the commander
As the commander it anchors a dedicated red Equipment deck, since guaranteed repeated access to the double-strike trigger from the command zone rewards building the whole 99 around a wide package of gear rather than a handful of pieces.
In the 99
A solid support piece in any red Equipment-focused deck even without leading it, providing a real combat boost on top of the free Axe token it brings on its own.
Formats it's strong in
Equipment-heavy decks. The more equipped creatures attacking, the bigger the double-strike payoff, which directly rewards a deck built around a wide Equipment package.
Aggressive, combat-focused red decks. Both halves of the card — the free Equipment and the double-strike trigger — support a plan built around attacking every turn.
Formats it's weak in
Low-Equipment decks. With few or no other equipped creatures, the double-strike trigger applies to little beyond whatever Dáin's own free Axe is attached to.
Defensive or non-aggressive decks. The whole payoff is locked behind attacking, which is a poor fit for a deck not planning to swing.
Synergistic cards
Bonesplitter — A cheap, efficient Equipment that becomes even better once attached to a double-strike attacker.
Sword of Fire and Ice — A powerful Equipment whose combat damage trigger fires twice per attacker under double strike, for a real value swing.
Puresteel Paladin — Reduces equip costs and draws cards off Equipment entering, supporting the same wide-gear plan Dáin rewards.
Any efficient, cheap Equipment — The more gear a deck can attach across its board, the bigger the payoff from Dáin's attack trigger.
Is it worth the price?
As a recent-set card, Dáin Ironfoot is inexpensive and a low-risk pickup for a red Equipment-matters deck — cheap enough to try without much financial commitment.