[LV1][LV2] (During Your Battle Phase) The BP of each LV1 spirits you control is treated as their LV2 BP in the Showdown Step.
[LV2] (During Your Battle Phase) Each time a spirit you control with High Speed is defeated, you may move more 1 core from your Reserve to your Trash. In that case, the defeated spirit is moved to your hand instead of your Trash.
[LV1][LV2] (Your Attack Step) Your [LV1] Spirit use their [LV2] BP when comparing BP in battles.
[LV2] (Either Attack Step) When your Spirit with High Speed is destroyed by opposing Spirit through BP comparison, by sending a core from your Reserve to the Trash, return it to your Hand.