Runestone Elder-Mage

Ward {2} (Whenever this creature becomes the target
of a spell or ability an opponent controls, counter it
unless that player pays {2}.)
Metalcraft — {t}: Add {u}{u}. Spend this mana
only to cast an instant or sorcery spell. Activate
this ability only if you control three or more
artifacts.
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"Never underestimate a wizard's stone.."