Battle Spirits Wiki
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Mirage Boost (ミラージュブースト) is a keyword introduced in BS56. The effect is worded as follows:

  • Mirage Boost: Color(/Color2) (When Attacks)
    By discarding one of your Mirage, set a Color(/Color2) card with Mirage effect from your Hand without paying the cost. When you have done so, [additional effects].

Though limited to certain colors, Mirage Boost allows the player to renew their Mirage during Attack Step, widening the options of strategies in game. However, the downside is that the previous Mirage is discarded, which means the user will be losing resources in the process. With that in mind, users may have the Spirit brave to cards such as Demon-God Princess to recycle cards during attack.

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