Metacarpus Node [CRU161] (Crucible of War) 1st Edition Normal

Whenever you play a card with an effect that deals arcane damage, you may pay [1 Resource]. If you do, that effect deals that much arcane damage plus 1 and at the beginning of the end phase, destroy Metamarpus Node. Arcane Barrier 1 (If your hero would be dealt arcane damage, you may pay [1 Resource] instead. If you do, prevent 1 arcane damage that source would deal.)