March of the Machine Commander

Stronghold Furnace

If a source would deal damage to a permanent or player, it deals double that damage instead.
Whenever chaos ensues, Stronghold Furnace deals 1 damage to any target.

Planechase Anthology Planes

If a source would deal damage to a creature or player, it deals double that damage to that creature or player instead.
Whenever you roll {Chaos}, Stronghold Furnace deals 1 damage to target creature or player.

Planechase Planes

If a source would deal damage to a creature or player, it deals double that damage to that creature or player instead.
Whenever you roll chaos, Stronghold Furnace deals 1 damage to target creature or player.