1. Generate Power Dice & Dispel Dice
The player whose turn it is assigns specific power dice to his Wizards and accumulates dice in his pool of power dice. The opponent accumulates dice in his pool of dispel dice.
One of that player's Wizards casts a spell using the power dice.
The opposing player may attempt to counter the spells using his dispel dice.
4. Spell Fails or Spell Succeeds
Apply the effect of the spell if it succeeds.
5. Repeat Steps 2 to 4
Provided that he has more spells to cast and more power dice remain, a Wizard can cast another spell. The opponent can attempt to dispel again with any remaining dispel dice.
6. Dispel Spells in Play
Once the player has finished casting his spells, he may use any remaining power dice to try to dispel spells in play (not the ones cast in that magic phase).
Finally, the opposing player may use any remaining dispel dice to try to dispel any spells in play (not the ones cast in that magic phase).