Combos Utilizing Pyroclasm

play pits of rath then play pyroclasm kill all creatures that were damaged

do four damage to each creature. add more inflames for lots of damage!

put out the revolt, which makes all lands 2/2's then cast shield wall to make your lands 2/4's then cast pyroclasm to deal 2 damage to each creature in play.

Pretty straightforward: cast Pyroclasm and then put Sudden Spoiling on top of it on the stack.

Play Maniacal Rage on Rockslide Elemental to make him a 3/3. Then use Starke of Rath to destroy whatever you need of your opponent's (which could make Rockslide a 4/4 if a creature). Then use Pyroclasm to kill Starke of Rath as your opponent takes control of him, and probably several other creatures. This will continue to beef up your Rockslide.

play revolt, using elves or druids for mana then pyroclasm for your own homemade armageddon

all your land become 2/3 creatures (til end of turn). cast pyroclasm to destroy all opponent's land

DESTROYS EVERYTHING EXCEPT THE GODHEAD.

deals 4 to each creature and doubles when it hit opponent

your opponents jaws will fall on the floor!!!