Cyclonus, the Saboteur // Cyclonus, Cybertronian Fighter

After Cyclonus, Cybertronian Fighter converts into Cyclonus, the Saboteur, it's still an attacking creature in combat, and will still have any gained abilities. Notably, if it has somehow gained double strike, it will convert before dealing combat damage in the regular combat damage step. This may cause it to convert again when it deals combat damage to a player a second time.

To determine the total cost of a spell, start with the mana cost or alternative cost (such as a More Than Meets the Eye cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of a spell cast using More Than Meets the Eye is determined by the mana cost on the front face of the card, no matter what the total cost to cast the spell was.

The mana value of a converted permanent on the battlefield is equal to the mana value of the card's front face, no matter which face is up.