| 1/1/2011 |
If the targeted artifact is an illegal target by the time the activated ability resolves, the ability doesn't resolve. Hoard-Smelter Dragon won't get the bonus. |
| 1/1/2011 |
If the mana cost of a permanent includes  , that X is considered to be 0. |
| 7/1/2013 |
If the activated ability resolves but the targeted artifact isn't destroyed (perhaps because it has indestructible or it regenerates), Hoard-Smelter Dragon will still get the bonus. |
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