The Multiverse is filled with limitless power just waiting for someone to reach out and seize it.

Pyretic Ritual

"Sometimes, students, rite makes might."
—Mother Luti

Secret Lair Drop

The List

Magic 2011

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.

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.