I actually find this card a little broken. Don't forget that poison counters are actually healing you under the influence of SoSac and in Shardless meta a
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deck with Grams, Physalias and Purifies can be devastating. Don't forget Gram can bypass DR shields than an Arsenic can't and 6 damage per turn for 2
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is too cheap for unupped meta. However, this idea is awesome imo, though it needs a little rebalancing (imo, it just needs a playing cost of 3
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).