Cathodion
Artifact Creature — Construct
When this creature dies, add 
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Cathodions repair the Great Furnace by soldering parts of themselves to the mechanism. Eventually, they become one with the machine.
3/3
イラスト：
Mirrodin#149アンコモン英語適正
裁定
2004年10月4日
The ability is never a mana ability.
2011年1月25日
You get the mana whether you want it or not. If you don't spend it, it will disappear at the end of the current step (or phase).
2011年1月25日
The triggered ability isn't a mana ability. It uses the stack and can be responded to.