Cleaving Skyrider

If you copy a kicked spell on the stack, the copy is also kicked. If the copied spell is a permanent spell, the token the copy of that spell becomes when it enters is also kicked.

To determine a spell's total cost, start with the mana cost (or an alternative cost if another card's effect allows you to pay one instead), add any cost increases (such as kicker), then apply any cost reductions. The spell's mana value remains unchanged, no matter what the total cost to cast it was.

Cleaving Skyrider's triggered ability counts all attacking creatures, even attacking creatures other players control.

In a Two-Headed Giant game, this triggered ability counts all attacking creatures that each attacking team controls.