Quote from soramaro »Quote from JaceBluesMaster »It is a volcanic eruption.
Ground is hot, non-fliers take some damage.
Eruption starts, so you get red mana.
Lava and ash wash across the land, dealing damage to everything. Only the strong will survive the torrent.
Yeah, it's fine from a top-down flavor perspective. Other sagas like Fall of the Thran or Time of Ice manage to combine flavor and mechanics better though.
The mana helps you to rebuild between the damage sweeps and protect your creatures from the second one and they fit well strategically.
But yes, they aren't mechanically related effects and they have no particular synergy.
I'm not sure if that's really a problem, though I did have the same reaction to seeing the card.