Pewterhide Sliver

Sliver creatures you control have "Noncreature spells cost 1 more to cast."
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"From the mouth of their hive, this new sliver loomed over the rest. Within moments of its arrival, the whole of the hive began to resonate with a hideous sound. I tried to defend myself, but each spell curdled on my fingertips. Retreat was our only option."
- Watchmaster Finn of An Karras