Boosting and You

There seems to be a lot of confusion about boosting, boosting effects, and how they resolve.  I figured I'd take the opportunity to resolve all of this confusion for those that aren't certain about how this works.

In order to boost with a unit, you rest both the unit that is boosting and the attacker.  The order in which you rest them is attacker first, then booster.  At this point if any "When this unit boosts..." or "When this unit attacks..." effects are activated, you resolve them.  If both units each have one of these skills, you choose the order they resolve.

Example - Pellinore being boosted by Little Battler, Tron in the Vanguard circle.  Tron's skill gives the unit it is boosting +4000 power if you have more rear guards than your opponent.  Pellinore moves two rear guards back to the deck to give 5000 power to two units.  If you activate Tron's skill first, then Pellinore's, even if you now have less rear guards than your opponent, you keep the +4000 power from Tron's effect.  Source.  You can also choose to move Tron back to the deck and Pellinore would keep the +4000 power, but that would be stupid since you would lose Tron's 6000 base power.  Don't do that.

Now, boosting take place across the duration of the attack.  There are two situations which make this relevant.  The first is in the event that you're playing Nova Grapplers.  They have a booster called Dancing Wolf.  Dancing Wolf's skill is "When this unit stands, he gains +3000 power until the end of the turn."  That effect sounds simple enough, but one of the most complicated rulings was, "What happens if I drive check a Stand Trigger while Dancing Wolf is boosting my Vanguard?  Does my Vanguard get the bonus 3000 power?"  The answer is yes.  Source.  This means that boosting is a continuous effect and the power of the booster is constantly being applied to the Vanguard throughout the attack step.  This brings up the final point, when does the attack step end?  The answer is after all "When this unit's attack hits" or "When this unit boosts and the attack that this unit boosted hits" effects resolve.

Final example.  Spring Breeze Messenger and Player of the Holy Bow, Vivianne.  Spring Breeze's effect is, "When an attack hits that this unit boosted, counterblast one, move this unit to soul, search the top three cards of your deck for one Gold Paladin and call it to a RC at rest".  Vivianne's skill is "When this unit's attack hits, and it is boosted by a Gold Paladin, you may look at the top card of your deck.  If it is a Gold Paladin, you may call it to an open RC".  One of the more confusing rulings is, if I hit with an attack, how can I resolve these effects to get both superior calls?  The answer is that you must resolve Vivianne's effect first in order to get both calls.  This goes back to the boosting being continuous while you are resolving effects.  If you resolve Spring Breeze's effect first, it gets moved to the soul.  This means that Vivianne will no longer have a unit boosting it so it can't resolve its effect since it requires a boost.  Source

I hope that this helps everyone out.  I know that boosting can be confusing at first because the rule book makes it seem like boosting is applied before the drive check and then the boosting is already counted.  Unfortunately, Bushiroad made this process a little more convoluted than it should have been.