Pyretic Ritual

Instant

“「一人だけでは、ただの熱と空気と小さな火。力を合わせれば、燃え広がり続ける炎。」 ――「炎の姉妹」”

• WotCAug 15, 2010

  In the same vein, you can cast Pyretic Ritual only at a time when you could cast any other instant, not at a time when you could activate a mana ability. For example, you can’t cast Pyretic Ritual in the midst of casting another spell; you’d need to cast Pyretic Ritual first.

• WotCAug 15, 2010

  Pyretic Ritual is not a mana ability and doesn’t behave like one. You cast it as a spell. It uses the stack. It can be responded to, and it can be countered.