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Thunder Swift (雷神速, Raishinsoku) is a Green keyword which debuted in BS39 as a new upgrade in the High Speed series of Green abilities and is possessed only so far by The Super-TwelveGodKing Gale-Phoenix Zephyr. The keyword reads:
- {During Seal} Thunder Swift - (Flash) This Spirit in your hand can be summoned as Cost 4.
As opposed to the original Swift where the cost of a Spirit must be paid from the Reserve to be summoned during Flash Timing, Thunder Swift allows the Spirit to be summoned at a reduced cost, using core from anywhere, as long as the player has Sealed.
Cards That Have Thunder Swift Effects
List of Spirits with Thunder Swift
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