BATTLE SPIRIT

[ BATTLE SPIRIT ] is a similar keyword to [ RAPID EVOLUTION ] that lets you use a monster as a Material for the Extra Summon of an Evo (or other Extra) Monster, even during the same turn when it was originally Normal Summoned. However, the key difference is, that [ BATTLE SPIRIT ] only works when the monster with that ability destroyed a monster by battle. If it couldn't destroy any monsters, it still cannot be used as a Material during the same turn when it was Summoned, just like other creatures. However, it can be used the next turn onwards, just like any other monsters.