Swampquake

Swampquake deals X damage to each creature
your opponents control.
For each creature that is destroyed this way,
create a 1/1 green Frog creature token
with Drench (Whenever this creature
deals combat damage to a player, draw a card).
"From the depths of the swamp, a cataclysmic
force surges, unleashing a torrent of amphibious
might upon the unwary."