Because of 3 things `Magmaspores` attack `Magma Blast` might not work as intended and currently is a melee attack:
1. The description states: "[...] hurls a fiery comet [...]". This does not happen, the Spore more or less explodes in the face of the enemy.
2. `Magma Blast` is an attack ablility. Melee units do not have their attacks described.
3. The attack has a huge splash of 25m which could also be why it got its own attack ability description, but I highly doubt it.