Staff, uncommon (requires attunement by a Bard)
This Lyre has 10 charges. While holding it, you must succeed an ability check (Performance) and you can use an action to expend 1 or more of its charges to cast one of the following spells from it, using your spell save DC and spellcasting ability modifier: Sacred Flame (2 charge per spell level, up to 4th), or cure wounds (6 charges).
A bard can use this lyre as arcane focus.
The Lyre regains 1d6 + 3 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the Lyre vanishes in a flash of light, lost forever.
Notes: Bard, Healing, Damage
I don't understand what you mean by "per spell level" sacred flame is a cantrip.