This spirit can't be summoned unless you pay at least 1 of the cost.
[LV1][LV2][LV3] (Each Player's Attack Step) All of your spirits are unaffected by opposing burst effects.
[LV3] (Your End Step) By returning 1 spirit you control to the bottom of your deck, you can activate 1 burst of the same color as that spirit with an equal or lesser cost, ignoring its condition.