Advanced Ki Selection Techniques

Every time Ki is obtained, the Dokkan meter increases. When the meter is full, the next Super Attack will be a Dokkan Attack, which deals extra Damage to all Enemies and replenishes some HP based on Damage dealt. Since the Dokkan Attack will always be launched on the next Super Attack after the meter is filled, managing meter growth is crucial in more difficult fights.

For example, in an event like Super Battle Road, unleashing a Dokkan Attack at the end of one fight when there are only one or two Enemies with low HP left will not be as effective as launching a Dokkan Attack at the beginning of a fight when all Enemies at full HP. This means that Ki selection should be made carefully throughout the entire event, to ensure that a Dokkan Attack is launched at the most optimal moment. Selecting the same color Ki Orbs as the attacking Card will make the Dokkan meter fill faster.
 

Selecting the same type Ki as the attacking Card will Heal the Team by a small amount. This can sometimes be useful for delaying transformations with HP-based activation conditions.

For example, if there is an LR Fused Super Power - Super Saiyan Goku & Super Saiyan Vegeta S.INT in the next rotation and the Team’s HP is right around 50%, then collecting some of the same type Ki to increase HP could be enough to delay the transformation for a later, more difficult portion of the fight.

Selecting the same color Ki when the Team is at full HP should only be done if it is the only way to ensure a Super Attack or if you are purposefully trying to build the Dokkan meter. Otherwise, the Orbs should be saved for the next rotation after the Team has received some Damage.

Legendary Rare (LR) Cards are some of the most powerful Cards in the game because they usually perform a stronger Super Attack at 18 Ki--although, there are several LRs that follow a slightly different Damage calculation. Therefore, it’s usually best to save Ki Orbs for LRs in the next rotation--especially if they lack Team support or Ki links.

Some Cards, like UR Non-Negotiable Resolve - Majin Vegeta E.STR and UR Desperate Showdown - Super Saiyan 2 Goku (Angel) S.AGL have the Passive Skill to change Ki Orb color. When a Card like this is in the next rotation, you can save the affected Orb types to optimize Orb links. 

For example, if UR Wrathful Eruption - Majin Buu (Good) E.STR is in the next rotation, avoiding INT (purple) Orbs will allow Buu to turn them into STR (red) Orbs next turn, potentially setting him up for a devastating attack.

Some Cards like UR Devastating Punishment - Beerus S.TEQ and UR Phantom Majin Sealed Within - Tapion (Hirudegarn) S.AGL will automatically transform into a temporary form under certain HP conditions. They are extremely powerful in their transformed state, but often need to have a full 12 Ki Super Attack to reach their maximum Damage potential. 

Unfortunately, these types of temporary forms no longer have any Links or support, making them entirely reliant on the board for Ki. If a transforming Card like that is in the next rotation, and you believe they will transform, it can be advisable to set up the board to ensure they get as much Ki as possible.