Bloodspill Invocation (Red) (Unlimited)
$1
(Aura's stay in the arena until they are destroyed.)
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When an attack action card you control hits, destroy Bloodspill Invocation then create 3 Runechant tokens. (They're auras with "When you play an attack action card or attack with a weapon, destroy Runechant and deal 1 arcane damage to target opposing hero.")
When your hero is dealt damage, destroy Bloodspill Invocation.